Content Update: April 2018 (337 new items!! 😱 AP subjects and more!)

Itching to learn a new subject? If so, you've come to the right place. The Khan Academy content team had a banner month in April, producing 337 new pieces of content - spanning Statistics and Probability, Art History, Biology, AP US Government and Politics, AP Physics, AP Macroeconomics, and some more Career stories for good measure. Enjoy and stay tuned for another big month in May!

Domain	Subject	Title	Content kind	URL
Arts and humanities	Ancient Mediterranean	Medieval synagogues in Toledo, Spain	Article	http://www.khanacademy.org/humanities/ancient-art-civilizations/judaism-art/a/medieval-synagogues-in-toledo-spain
Arts and humanities	Ancient Mediterranean	Rome's history in four faces at The Met	Video	http://www.khanacademy.org/humanities/ancient-art-civilizations/roman/beginners-guide-rome/v/romes-history-in-four-faces-at-the-met
Arts and humanities	Ancient Mediterranean	Emperor or athlete? Rethinking a modern attribution	Video	http://www.khanacademy.org/humanities/ancient-art-civilizations/roman/late-empire/v/emperor-or-athlete-rethinking-a-modern-attribution
Arts and humanities	AP Art History	Painting modern life: Monet's Gare Saint-Lazare	Video	http://www.khanacademy.org/humanities/ap-art-history/later-europe-and-americas/modernity-ap/v/monet-gare-saint-lazare
Arts and humanities	AP US Government and Politics	American attitudes about government and politics	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/american-attitudes-about-government-and-politics/e/american-attitudes-about-government-and-politics
Arts and humanities	AP US Government and Politics	American attitudes about government and politics	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/american-attitudes-about-government-and-politics/v/core-beliefs-around-the-role-of-government-in-the-us
Arts and humanities	AP US Government and Politics	Lesson summary: American attitudes about government and politics	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/american-attitudes-about-government-and-politics/a/lesson-summary-american-attitudes-about-government-and-politics
Arts and humanities	AP US Government and Politics	Ideologies of political parties	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/ideologies-of-political-parties/e/ideologies-of-political-parties
Arts and humanities	AP US Government and Politics	Lesson summary: ideologies of political parties	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/ideologies-of-political-parties/a/lesson-summary-ideologies-of-political-parties
Arts and humanities	AP US Government and Politics	Influences on ideology	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/changes-in-ideology/e/influences-on-ideology
Arts and humanities	AP US Government and Politics	Lesson summary: influences on ideology	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/changes-in-ideology/a/lesson-summary-changes-in-ideology
Arts and humanities	AP US Government and Politics	Political socialization	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/political-socialization/v/political-socialization
Arts and humanities	AP US Government and Politics	Political socialization	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/political-socialization/e/political-socialization
Arts and humanities	AP US Government and Politics	Lesson summary: political socialization	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/american-political-beliefs-and-behaviors/political-socialization/a/lesson-summary-political-socialization
Arts and humanities	AP US Government and Politics	Affirmative action	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/affirmative-action/v/affirmative-action
Arts and humanities	AP US Government and Politics	Lesson summary: affirmative action	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/affirmative-action/a/lesson-summary-affirmative-action
Arts and humanities	AP US Government and Politics	Balancing individual freedom with public order and safety	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/amendments-balancing-individual-freedom-with-public-order-and-safety/e/amendments--balancing-individual-freedom-with-public-order-and-safety
Arts and humanities	AP US Government and Politics	The Eighth Amendment	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/amendments-balancing-individual-freedom-with-public-order-and-safety/v/the-eighth-amendment
Arts and humanities	AP US Government and Politics	The Fourth Amendment	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/amendments-balancing-individual-freedom-with-public-order-and-safety/v/the-fourth-amendment
Arts and humanities	AP US Government and Politics	Lesson summary: balancing individual freedom with public order and safety	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/amendments-balancing-individual-freedom-with-public-order-and-safety/a/lesson-summary-balancing-individual-freedom-with-public-order-and-safety
Arts and humanities	AP US Government and Politics	Balancing minority and majority rights	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/balancing-minority-majority-rights/e/balancing-minority-and-majority-rights
Arts and humanities	AP US Government and Politics	Rulings on majority and minority rights by the Supreme Court	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/balancing-minority-majority-rights/v/rulings-on-majority-and-minority-rights-by-the-supreme-court
Arts and humanities	AP US Government and Politics	Lesson summary: balancing minority and majority rights	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/balancing-minority-majority-rights/a/lesson-summary-balancing-minority-and-majority-rights
Arts and humanities	AP US Government and Politics	Due process and right to privacy	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/amendments-due-process-and-the-right-to-privacy/e/due-process-and-right-to-privacy
Arts and humanities	AP US Government and Politics	Lesson summary: due process and the right to privacy	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/amendments-due-process-and-the-right-to-privacy/a/lesson-summary-due-process-and-the-right-to-privacy
Arts and humanities	AP US Government and Politics	Due process and the rights of the accused	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/due-process-rights-of-accused/e/amendments--due-process-and-the-rights-of-the-accused
Arts and humanities	AP US Government and Politics	The Fifth Amendment	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/due-process-rights-of-accused/v/the-fifth-amendment
Arts and humanities	AP US Government and Politics	The Sixth Amendment	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/due-process-rights-of-accused/v/the-sixth-amendment
Arts and humanities	AP US Government and Politics	Lesson summary: due process and the rights of the accused	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/due-process-rights-of-accused/a/lesson-summary-due-process-and-the-rights-of-the-accused
Arts and humanities	AP US Government and Politics	Brown v. Board of Education of Topeka	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/government-responses-to-social-movements/v/brown-v-board-of-education-of-topeka-us-government-and-politics-khan-academy
Arts and humanities	AP US Government and Politics	Government responses to social movements	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/government-responses-to-social-movements/e/government-responses-to-social-movements
Arts and humanities	AP US Government and Politics	Lesson summary: government responses to social movements	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/government-responses-to-social-movements/a/lesson-summary-government-responses-to-social-movements
Arts and humanities	AP US Government and Politics	Selective incorporation	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/selective-incorporation/e/selective-incorporation
Arts and humanities	AP US Government and Politics	Lesson summary: selective incorporation	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/selective-incorporation/a/lesson-summary-selective-incorporation
Arts and humanities	AP US Government and Politics	The Fourteenth Amendment and equal protection	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/social-movements-equal-protection/v/14th-amendment-and-equal-protection
Arts and humanities	AP US Government and Politics	Letter from a Birmingham Jail	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/social-movements-equal-protection/v/letter-from-a-birmingham-jail
Arts and humanities	AP US Government and Politics	Social movements and equal protection	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/social-movements-equal-protection/e/social-movements-and-equal-protection
Arts and humanities	AP US Government and Politics	Lesson summary: social movements and equal protection	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/social-movements-equal-protection/a/lesson-summary-social-movements-and-equal-protection
Arts and humanities	AP US Government and Politics	Overview of the Bill of Rights	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/bill-of-rights/v/overview-of-the-bill-of-rights
Arts and humanities	AP US Government and Politics	The Bill of Rights	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/bill-of-rights/e/the-bill-of-rights
Arts and humanities	AP US Government and Politics	Lesson summary: the Bill of Rights	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/bill-of-rights/a/lesson-summary-the-bill-of-rights
Arts and humanities	AP US Government and Politics	Freedom of religion	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/e/first-amendment-freedom-of-religion
Arts and humanities	AP US Government and Politics	Freedom of speech	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/e/freedom-of-speech
Arts and humanities	AP US Government and Politics	Freedom of the press	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/e/freedom-of-the-press
Arts and humanities	AP US Government and Politics	The First Amendment	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/v/the-first-amendment
Arts and humanities	AP US Government and Politics	Lesson summary: freedom of the press	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/a/lesson-summary-freedom-of-the-press
Arts and humanities	AP US Government and Politics	Lesson summary: freedom of religion	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/a/lesson-summary-freedom-of-religion
Arts and humanities	AP US Government and Politics	Lesson summary: freedom of speech	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/a/lesson-summary-freedom-of-speech
Arts and humanities	AP US Government and Politics	New York Times Co. v. United States (1971)	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/a/new-york-times-co-v-united-states-1971
Arts and humanities	AP US Government and Politics	Schenck v. United States (1919)	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/first-amendment-religion/a/schenck-v-united-states-1919
Arts and humanities	AP US Government and Politics	The Second Amendment	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/second-amendment/e/second-amendment--right-to-bear-arms
Arts and humanities	AP US Government and Politics	The Second Amendment	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/second-amendment/v/the-second-amendment
Arts and humanities	AP US Government and Politics	Lesson summary: the Second Amendment	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/civil-liberties-and-civil-rights/second-amendment/a/lesson-summary-second-amendment
Arts and humanities	AP US Government and Politics	McCulloch v. Maryland	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/foundations-of-american-democracy/constitutional-interpretations-of-federalism/v/mcculloch-v-maryland
Arts and humanities	AP US Government and Politics	The Tenth Amendment	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/foundations-of-american-democracy/constitutional-interpretations-of-federalism/v/the-tenth-amendment
Arts and humanities	AP US Government and Politics	Article VII of the Constitution	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/foundations-of-american-democracy/ratification-of-the-us-constitution/v/article-vii-of-the-constitution
Arts and humanities	AP US Government and Politics	Campaign finance	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/campaign-finance/v/campaign-finance
Arts and humanities	AP US Government and Politics	Campaign finance	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/campaign-finance/e/campaign-finance
Arts and humanities	AP US Government and Politics	Lesson summary: campaign finance	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/campaign-finance/a/lesson-summary-campaign-finance
Arts and humanities	AP US Government and Politics	Congressional elections	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/congressional-elections/e/congressional-elections
Arts and humanities	AP US Government and Politics	Congressional elections	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/congressional-elections/v/congressional-elections
Arts and humanities	AP US Government and Politics	Lesson summary: congressional elections	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/congressional-elections/a/lesson-summary-congressional-elections
Arts and humanities	AP US Government and Politics	Electing a president	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/electing-a-president/e/electing-a-president
Arts and humanities	AP US Government and Politics	The presidential incumbency advantage	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/electing-a-president/v/incumbency-advantage-phenomenon
Arts and humanities	AP US Government and Politics	Open primaries, closed primaries, and blanket primaries	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/electing-a-president/v/open-primaries-closed-primaries-and-blanket-primaries
Arts and humanities	AP US Government and Politics	Lesson summary: electing a president	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/electing-a-president/a/lesson-summary-electing-a-president
Arts and humanities	AP US Government and Politics	Groups influencing policy outcomes	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/groups-influencing-policymaking/e/groups-influencing-policy-outcomes-exercise
Arts and humanities	AP US Government and Politics	Interest groups and lobbying	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/groups-influencing-policymaking/v/interest-groups-and-lobbying
Arts and humanities	AP US Government and Politics	Interest groups influencing policymaking	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/groups-influencing-policymaking/e/interest-groups-influencing-policymaking-exercise
Arts and humanities	AP US Government and Politics	Evolution of political parties in picking candidates and voter mobilization	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/how-and-why-political-parties-change-and-adapt/v/evolution-of-political-parties-in-picking-candidates-and-voter-mobilization
Arts and humanities	AP US Government and Politics	How and why political parties change and adapt	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/how-and-why-political-parties-change-and-adapt/e/how-and-why-political-parties-change-and-adapt-exercise
Arts and humanities	AP US Government and Politics	Modern campaigns	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/modern-campaigns/e/modern-campaigns
Arts and humanities	AP US Government and Politics	Lesson summary: modern campaigns	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/modern-campaigns/a/lesson-summary-modern-campaigns
Arts and humanities	AP US Government and Politics	Linkage institutions and political parties	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/political-parties/v/linkage-institutions-and-political-parties
Arts and humanities	AP US Government and Politics	Political parties	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/political-parties/e/political-parties-exercise
Arts and humanities	AP US Government and Politics	Lesson summary: political parties	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/political-parties/a/lesson-summary-political-parties
Arts and humanities	AP US Government and Politics	The media	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/the-media/e/the-media
Arts and humanities	AP US Government and Politics	Lesson summary: the media	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/the-media/a/lesson-summary-the-media
Arts and humanities	AP US Government and Politics	Third parties in the United States	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/third-party-politics/v/third-parties-in-the-united-states
Arts and humanities	AP US Government and Politics	Third-party politics	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/third-party-politics/e/third-party-politics-exercise
Arts and humanities	AP US Government and Politics	Lesson summary: third-party politics	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/third-party-politics/a/lesson-summary-third-party-politics
Arts and humanities	AP US Government and Politics	Voter turnout	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/voter-turnout/v/voter-turnout
Arts and humanities	AP US Government and Politics	Voter turnout	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/voter-turnout/e/voter-turnout-exercise
Arts and humanities	AP US Government and Politics	Lesson summary: voter turnout	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/voter-turnout/a/lesson-summary-voter-turnout
Arts and humanities	AP US Government and Politics	Models of voting behavior	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/voting-rights-and-models-of-voter-behavior/v/models-of-voting-behavior
Arts and humanities	AP US Government and Politics	Voting rights and models of voter behavior	Exercise	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/voting-rights-and-models-of-voter-behavior/e/voting-rights-and-models-of-voter-behavior-exercise
Arts and humanities	AP US Government and Politics	Lesson summary: voting rights and models of voting behavior	Article	http://www.khanacademy.org/humanities/ap-us-government-and-politics/political-participation/voting-rights-and-models-of-voter-behavior/a/lesson-summary-voting-rights-and-models-of-voting-behavior
Arts and humanities	AP US Government and Politics	Marbury v. Madison	Video	http://www.khanacademy.org/humanities/ap-us-government-and-politics/interactions-among-branches-of-government/the-judicial-branch/v/marbury-v-madison
Arts and humanities	Art history basics	The Case for Museums	Video	http://www.khanacademy.org/humanities/art-history-basics/beginners-art-history/v/the-case-for-museums
Arts and humanities	Art in 19th century Europe	How to recognize Monet: The Basin at Argenteuil	Video	http://www.khanacademy.org/humanities/becoming-modern/avant-garde-france/impressionism/v/how-to-recognize-monet-the-basin-at-argenteuil
Arts and humanities	Art in 19th century Europe	How to Recognize Renoir: The Swing	Video	http://www.khanacademy.org/humanities/becoming-modern/avant-garde-france/impressionism/v/how-to-recognize-renoir-the-swing
Arts and humanities	Art of Asia	The Meenakshi Temple at Madurai	Article	http://www.khanacademy.org/humanities/art-asia/south-asia/hindu-art/a/the-meenakshi-temple-at-madurai
Arts and humanities	Art of Asia	Shore Temple, Mamallapuram	Article	http://www.khanacademy.org/humanities/art-asia/south-asia/hindu-art/a/shore-temple-mamallapuram
Arts and humanities	Art of Oceania	Kiribati armor	Article	http://www.khanacademy.org/humanities/art-oceania/micronesia/a/kiribati-armor
Arts and humanities	Art of the Americas to World War I	The light of democracy ‚Äî examining the Statue of Liberty	Video	http://www.khanacademy.org/humanities/art-americas/us-art-19c/us-19c-arch-sculp-photo/v/light-of-democracy-statue-of-liberty
Arts and humanities	Art of the Americas to World War I	Church of S√£o Francisco de Assis, Ouro Preto, Brazil	Article	http://www.khanacademy.org/humanities/art-americas/new-spain/colonial-brazil/a/church-of-so-francisco-de-assis-ouro-preto-brazil
Arts and humanities	Art of the Americas to World War I	Crowned Nun Portrait of Sor Mar√≠a de Guadalupe	Video	http://www.khanacademy.org/humanities/art-americas/new-spain/viceroyalty-new-spain/v/crowned-nun-portrait-of-sor-mara-de-guadalupe
Arts and humanities	Art of the Americas to World War I	Chaco Canyon	Article	http://www.khanacademy.org/humanities/art-americas/early-cultures/ancestral-puebloan/a/chaco-canyon
Arts and humanities	Global contemporary art	The Case for Performance Art	Video	http://www.khanacademy.org/humanities/global-culture/conceptual-performance/v/the-case-for-performance-art
Arts and humanities	Modernisms 1900-1980	Giacometti, Walking Man II	Video	http://www.khanacademy.org/humanities/art-1010/art-post-war-britain/v/giacometti-walking-man-ii
Arts and humanities	Modernisms 1900-1980	The Case for Land Art	Video	http://www.khanacademy.org/humanities/art-1010/minimalism-earthworks/v/the-case-for-land-art
Arts and humanities	Modernisms 1900-1980	How to paint like Willem de Kooning - Part 2	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/how-to-paint-like-willem-de-kooning-part-2-in-the-studio
Arts and humanities	Modernisms 1900-1980	Mark Rothko's No. 3/No. 13	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/mark-rothko-no-3-no-13-1949
Arts and humanities	Modernisms 1900-1980	Robert Motherwell, Elegy to the Spanish Republic No. 57	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/robert-motherwell-elegy-to-the-spanish-republic-no-57-1957-60
Arts and humanities	Modernisms 1900-1980	Rothko, No. 210/No. 211 (Orange)	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/rothko-orange
Arts and humanities	Modernisms 1900-1980	The Case for Jackson Pollock	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/the-case-for-jackson-pollock
Arts and humanities	Modernisms 1900-1980	The Case For Mark Rothko	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/the-case-for-mark-rothko
Arts and humanities	Modernisms 1900-1980	Why is that important? Looking at Jackson Pollock	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/why-is-that-important-looking-at-jackson-pollock
Arts and humanities	Modernisms 1900-1980	de Kooning, Woman I	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/willem-de-kooning-woman-i-1950-52
Arts and humanities	Modernisms 1900-1980	Willem de Kooning, Woman, I (from MoMA)	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/abstract-expressionism/v/womani-test
Arts and humanities	Modernisms 1900-1980	Ad Reinhardt, Abstract Painting	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/new-york-school/v/ad-reinhardt-abstract-painting-1963
Arts and humanities	Modernisms 1900-1980	Ed Kienholz and Nancy Reddin Kienholz Useful Art #5: The Western Hotel, 1992	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/new-york-school/v/ed-kienholz-and-nancy-reddin-kienholz-useful-art-5-the-western-hotel-1992
Arts and humanities	Modernisms 1900-1980	Robert Rauschenberg, Bed	Video	http://www.khanacademy.org/humanities/art-1010/abstract-exp-nyschool/new-york-school/v/robert-rauschenberg-bed-1955
College, careers, and more	Careers	Director of Photography: How I got my job and where I'm going	Video	http://www.khanacademy.org/college-careers-more/career-content/design-create-perform/director-of-photography/v/director-of-photography-how-i-got-my-job-and-where-im-going
College, careers, and more	Careers	Director of Photography: My budget and planning for the future	Video	http://www.khanacademy.org/college-careers-more/career-content/design-create-perform/director-of-photography/v/director-of-photography-my-budget-and-planning-for-the-future
College, careers, and more	Careers	Director of Photography: What I do and how much I make	Video	http://www.khanacademy.org/college-careers-more/career-content/design-create-perform/director-of-photography/v/director-of-photography-what-i-do-and-how-much-i-make
College, careers, and more	Careers	Health Care Community Liaison: How I got my job and where I'm going	Video	http://www.khanacademy.org/college-careers-more/career-content/support-health-and-wellness/healthcare-community-liaison/v/teresa-healthcare-community-liaison-how-i-got-my-job-and-where-im-going
College, careers, and more	Careers	Health Care Community Liaison: My budget and planning for the future	Video	http://www.khanacademy.org/college-careers-more/career-content/support-health-and-wellness/healthcare-community-liaison/v/teresa-healthcare-community-liaison-my-budget-and-planning-for-the-future
College, careers, and more	Careers	Health Care Community Liaison: What I do and how much I make	Video	http://www.khanacademy.org/college-careers-more/career-content/support-health-and-wellness/healthcare-community-liaison/v/teresa-healthcare-community-liaison-what-i-do-and-how-much-i-make
Economics and finance	AP Macroeconomics	Monetary policy	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/monetary-policy-apmacro/e/monetary-policy
Economics and finance	AP Macroeconomics	Monetary policy tools	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/monetary-policy-apmacro/v/monetary-policy-tools-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	Lesson summary: monetary policy	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/monetary-policy-apmacro/a/monetary-policy
Economics and finance	AP Macroeconomics	Nominal interest, real interest, and inflation calculations	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/nominal-v-real-interest-rates-ap/v/nominal-interest-real-interest-and-inflation-calculations-ap-macroeconomics-khan-academy2
Economics and finance	AP Macroeconomics	Loanable funds market	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-market-for-loanable-funds/v/loanable-funds-market-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	National savings and investment	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-market-for-loanable-funds/v/national-savings-and-investment-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	The market for loanable funds	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-market-for-loanable-funds/e/the-market-for-loanable-funds
Economics and finance	AP Macroeconomics	Lesson summary: the market for loanable funds	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-market-for-loanable-funds/a/the-market-for-loanable-funds
Economics and finance	AP Macroeconomics	Demand curve for money in the money market	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-money-market-apmacro/v/demand-curve-for-money-in-the-money-market-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	Equilibrium nominal interest rates in the money market	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-money-market-apmacro/v/equilibrium-nominal-interest-rates-in-the-money-market-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	The money market	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-money-market-apmacro/e/the-money-market
Economics and finance	AP Macroeconomics	Lesson summary: the money market	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-financial-sector/the-money-market-apmacro/a/the-money-market
Economics and finance	AP Macroeconomics	Crowding out	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/crowding-out/e/crowding-out
Economics and finance	AP Macroeconomics	Crowding out	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/crowding-out/v/crowding-out-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	Lesson summary: crowding out	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/crowding-out/a/crowding-out
Economics and finance	AP Macroeconomics	Economic growth	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/economic-growth/e/economic-growth
Economics and finance	AP Macroeconomics	Understanding economic growth	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/economic-growth/v/understanding-economic-growth-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	Lesson summary: Economic growth	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/economic-growth/a/lesson-summary-economic-growth
Economics and finance	AP Macroeconomics	Money growth and inflation	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/money-growth-and-inflation/e/money-growth-and-inflation
Economics and finance	AP Macroeconomics	Quantity theory of money	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/money-growth-and-inflation/v/quantity-theory-of-money-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	Lesson summary: money growth and inflation	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/money-growth-and-inflation/a/money-growth-and-inflation
Economics and finance	AP Macroeconomics	The Phillips curve: concepts	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/the-phillips-curve/e/the-phillips-curve
Economics and finance	AP Macroeconomics	The Phillips curve: graphs	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/the-phillips-curve/e/the-phillips-curve---graphical-analysis
Economics and finance	AP Macroeconomics	Lesson summary: the Phillips curve	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-long-run-consequences-of-stabilization-policies/the-phillips-curve/a/the-phillips-curve
Economics and finance	AP Macroeconomics	Causes of shifts in currency supply and demand curves	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/effect-of-changes-in-policies-and-economic-conditions-on-the-foreign-exchange-market/v/causes-of-shifts-in-currency-supply-and-demand-curves-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	Effect of changes in policies and economic conditions on the foreign exchange market	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/effect-of-changes-in-policies-and-economic-conditions-on-the-foreign-exchange-market/e/effect-of-changes-in-policies-and-economic-conditions-on-the-foreign-exchange-market
Economics and finance	AP Macroeconomics	Lesson summary: effect of changes in policies and economic conditions on the foreign exchange market	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/effect-of-changes-in-policies-and-economic-conditions-on-the-foreign-exchange-market/a/effect-of-changes-in-policies-and-economic-conditions-on-the-foreign-exchange-market
Economics and finance	AP Macroeconomics	Introduction to currency exchange and trade	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/real-interest-rates-and-international-capital-flows/v/introduction-to-currency-exchange-and-trade-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	Real interest rates and international capital flows	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/real-interest-rates-and-international-capital-flows/e/real-interest-rates-and-international-capital-flows
Economics and finance	AP Macroeconomics	Foreign exchange and international capital flows	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/real-interest-rates-and-international-capital-flows/a/foreign-exchange-and-international-capital-flows
Economics and finance	AP Macroeconomics	The balance of payments	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/the-balance-of-payments/e/the-balance-of-payments
Economics and finance	AP Macroeconomics	Lesson summary: The balance of payments	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/the-balance-of-payments/a/the-balance-of-payments
Economics and finance	AP Macroeconomics	Using a person's budget to understand the balance of payments	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/the-balance-of-payments/a/going-further-using-a-persons-budget-to-understand-the-balance-of-payments
Economics and finance	AP Macroeconomics	Supply and demand curves in foreign exchange	Video	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/the-foreign-exchange-market/v/supply-and-demand-curves-in-foreign-exchange-ap-macroeconomics-khan-academy
Economics and finance	AP Macroeconomics	The foreign exchange market	Exercise	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/the-foreign-exchange-market/e/the-foreign-exchange-market
Economics and finance	AP Macroeconomics	Lesson summary: the foreign exchange market	Article	http://www.khanacademy.org/economics-finance-domain/ap-macroeconomics/ap-open-economy-international-trade-and-finance/the-foreign-exchange-market/a/the-foreign-exchange-market
Math	AP Statistics	Chi-square test for association (independence)	Video	http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-tests-two-way-tables/v/chi-square-test-association-independence
Math	AP Statistics	Test statistic and P-value in chi-square tests with two-tables	Exercise	http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-tests-two-way-tables/e/test-statistics-p-values-chi-square-tests-two-way-tables
Math	AP Statistics	Introduction to inference about slope in linear regression	Video	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/v/intro-inference-slope
Math	AP Statistics	Test statistic for slope	Exercise	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/e/test-statistic-p-value-t-test-slope
Math	AP Statistics	Worked example of linear regression using transformed data	Video	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/transformations-for-linearity/v/transformed-linear-regression-example
Math	AP Statistics	Transforming nonlinear data	Video	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/transformations-for-linearity/v/transforming-nonlinear-data
Math	AP Statistics	Choosing an appropriate inference procedure	Exercise	http://www.khanacademy.org/math/ap-statistics/prepare-for-the-2018-ap-statistics-exam/prepare-for-ap-stats-exam/e/choosing-inference-procedure
Math	Statistics and probability	Making conclusions about slope	Exercise	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/e/conclusions-t-test-slope
Math	Statistics and probability	Conditions for inference on slope	Video	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/v/conditions-inference-slope
Math	Statistics and probability	Confidence interval for slope	Exercise	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/e/confidence-interval-slope
Math	Statistics and probability	Confidence interval for the slope of a regression line	Video	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/v/confidence-interval-slope
Math	Statistics and probability	Using a confidence interval to test slope	Video	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/v/interval-test-slope
Math	Statistics and probability	Using a P-value to make conclusions in a test about slope	Video	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/v/making-conclusions-for-regression-slope-hypothesis-test
Math	Statistics and probability	Calculating t statistic for slope of regression line	Video	http://www.khanacademy.org/math/ap-statistics/inference-slope-linear-regression/inference-slope/v/t-statistic-slope
Math	Statistics and probability	Chi-square statistic for hypothesis testing	Video	http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-goodness-fit/v/chi-square-statistic
Math	Statistics and probability	Chi-square goodness-of-fit example	Video	http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-goodness-fit/v/goodness-of-fit-example
Math	Statistics and probability	Introduction to the chi-square test for homogeneity	Video	http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-tests-two-way-tables/v/chi-square-test-homogeneity
Math	Statistics and probability	Making conclusions in chi-square tests for two-way tables	Exercise	http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-tests-two-way-tables/e/conclusions-chi-square-tests-for-two-way-tables
Math	Statistics and probability	Expected counts in chi-squared tests with two-way tables	Exercise	http://www.khanacademy.org/math/ap-statistics/chi-square-tests/chi-square-tests-two-way-tables/e/expected-counts-chi-square-test-two-way-tables
Science	AP Physics 1	Using voltmeters and ammeters to measure potential difference and current	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/dc-ammeters-and-voltmeters-ap/e/dc-voltmeters-and-ammeters-ap1
Science	AP Physics 1	DC Ammeters and voltmeters review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/dc-ammeters-and-voltmeters-ap/a/dc-voltmeters-and-ammeters-ap1
Science	AP Physics 1	Advanced circuit analysis	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/dc-circuit-analysis-ap/e/circuit-analysis-ap1
Science	AP Physics 1	Current due to closing a switch: worked example	Video	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/dc-circuit-analysis-ap/v/current-due-to-closing-a-switch-worked-example
Science	AP Physics 1	Current through resistor in parallel: Worked example	Video	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/dc-circuit-analysis-ap/v/current-through-resistor-in-parallel-worked-example
Science	AP Physics 1	Calculating resistance, voltage, and current using Ohm's law	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/current-ap/e/voltage-and-ohm-s-law-ap1
Science	AP Physics 1	Current, resistance, and resistivity review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/current-ap/a/resistance-and-resistivity-ap1
Science	AP Physics 1	Electric potential difference and Ohm's law review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/current-ap/a/voltage-and-ohms-law-ap1
Science	AP Physics 1	Characteristics of circuit diagrams	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/introduction-to-dc-circuits-ap/e/circuit-diagrams-ap1
Science	AP Physics 1	Calculations from circuit diagrams	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/introduction-to-dc-circuits-ap/e/simple-circuits-numerical-ap1
Science	AP Physics 1	DC Circuit and electrical power review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/introduction-to-dc-circuits-ap/a/circuit-introduction
Science	AP Physics 1	Kirchhoff's junction rule	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/kirchhoffs-junction-rule/e/kirchoff-s-junction-rule-ap-quiz
Science	AP Physics 1	Kirchhoff's junction rule review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/kirchhoffs-junction-rule/a/kirchhoffs-junction-rule-ap1
Science	AP Physics 1	Kirchhoff's loop rule calculations	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/kirchhoffs-loop-rule-ap/e/kirchhoff-s-loop-rule-numerical-exercises
Science	AP Physics 1	Kirchhoff's loop rule: Symbolic problems	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/kirchhoffs-loop-rule-ap/e/kirchhoff-s-loop-rule-symbolic-exercises
Science	AP Physics 1	Kirchhoff's loop rule review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/kirchhoffs-loop-rule-ap/a/kirchhoffs-loop-rule-ap1
Science	AP Physics 1	Calculating equivalent resistance for series and parallel resistors	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/series-circuits-ap/e/series-and-parallel-resistors-ap-physics-1
Science	AP Physics 1	Resistors in series and parallel review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-circuits-topic/series-circuits-ap/a/resistors-in-series-and-parallel
Science	AP Physics 1	Charge transfer processes	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/conservation-of-charge-ap/e/charge-transfer-ap-physics-1
Science	AP Physics 1	Applying conservation of charge	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/conservation-of-charge-ap/e/conservation-of-charge-quantitative-ap-physics-1
Science	AP Physics 1	Conservation of charge review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/conservation-of-charge-ap/a/conservation-of-charge-ap-physics-1
Science	AP Physics 1	Comparing electric force and gravitational force	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/coulombs-law-and-electric-force-ap/e/comparing-electric-and-gravitational-force
Science	AP Physics 1	Relationship between electric force, charge, and distance	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/coulombs-law-and-electric-force-ap/e/electric-force
Science	AP Physics 1	Coulomb's Law and electric force review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/coulombs-law-and-electric-force-ap/a/coulombs-law-and-electric-force-ap-physics-1
Science	AP Physics 1	Quantization of charge in experimental data	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/electric-charge-ap/e/quantization-of-charge-ap1
Science	AP Physics 1	Electric charge review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-electric-charge-electric-force-and-voltage/electric-charge-ap/a/electric-charge-ap1
Science	AP Physics 1	Breaking down forces for free body diagrams	Video	http://www.khanacademy.org/science/ap-physics-1/ap-forces-newtons-laws/angled-forces-ap/v/breaking-down-forces-for-free-body-diagrams
Science	AP Physics 1	Free body diagram with angled forces: worked example	Video	http://www.khanacademy.org/science/ap-physics-1/ap-forces-newtons-laws/angled-forces-ap/v/free-body-diagram-with-angled-forces-worked-example
Science	AP Physics 1	Types of forces and free body diagrams	Video	http://www.khanacademy.org/science/ap-physics-1/ap-forces-newtons-laws/introduction-to-forces-and-free-body-diagrams-ap/v/types-of-forces-and-free-body-diagrams
Science	AP Physics 1	Predicting motion using the center of mass	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/center-of-mass-ap/e/center-of-mass-exercises-ap1
Science	AP Physics 1	Center of mass and two-dimensional collisions review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/center-of-mass-ap/a/center-of-mass-ap1
Science	AP Physics 1	Calculating speed and mass using conservation of momentum	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/conservation-of-momentum-and-elastic-collisions-ap/e/conservation-of-momentum-ap-physics-1
Science	AP Physics 1	Elastic collisions review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/conservation-of-momentum-and-elastic-collisions-ap/a/elastic-collisions-ap1
Science	AP Physics 1	Properties of inelastic and elastic collisions	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/inelastic-collisions-and-2d-collisions-ap/e/inelastic-collisions-ap1
Science	AP Physics 1	Inelastic collision review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/inelastic-collisions-and-2d-collisions-ap/a/inelastic-collisions-ap1
Science	AP Physics 1	Momentum and velocity from force vs. time graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/introduction-to-linear-momentum-and-impulse-ap/e/impulse-momentum-theorem-qualitative-exercises-ap1
Science	AP Physics 1	Change in momentum and speed from force vs. time graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/introduction-to-linear-momentum-and-impulse-ap/e/impulse-momentum-theorem-quantitative-exercises-ap1
Science	AP Physics 1	Calculating linear momentum and change in momentum	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/introduction-to-linear-momentum-and-impulse-ap/e/introduction-to-linear-momentum-exercises-ap1
Science	AP Physics 1	Impulse review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/introduction-to-linear-momentum-and-impulse-ap/a/impulse-ap1
Science	AP Physics 1	Linear momentum review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-linear-momentum/introduction-to-linear-momentum-and-impulse-ap/a/intro-to-linear-momentum-ap1
Science	AP Physics 1	Energy graphs for simple harmonic motion	Video	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/energy-in-a-simple-harmonic-oscillator-ap/v/energy-graphs-for-simple-harmonic-motion
Science	AP Physics 1	Analyzing energy for a simple harmonic oscillator from data tables	Exercise	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/energy-in-a-simple-harmonic-oscillator-ap/e/shm-energy-from-a-data-table-ap1
Science	AP Physics 1	Analyzing energy for a simple harmonic oscillator from graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/energy-in-a-simple-harmonic-oscillator-ap/e/shm-energy-graphs-ap1
Science	AP Physics 1	Energy of simple harmonic oscillator review	Article	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/energy-in-a-simple-harmonic-oscillator-ap/a/energy-of-simple-harmonic-oscillator-review-ap
Science	AP Physics 1	Simple harmonic motion: Finding frequency and period from graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/introduction-to-simple-harmonic-motion-ap/e/finding-frequency-and-period-from-shm-graph-ap1
Science	AP Physics 1	Simple harmonic motion: Finding speed, velocity, and displacement from graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/introduction-to-simple-harmonic-motion-ap/e/finding-speed--velocity--and-distance-from-shm-graphs-ap1
Science	AP Physics 1	Introduction to simple harmonic motion review	Article	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/introduction-to-simple-harmonic-motion-ap/a/introduction-to-simple-harmonic-motion-review
Science	AP Physics 1	Analyzing graphs of spring-mass systems	Exercise	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/spring-mass-systems-ap/e/spring-mass-graph-comparisons-ap-physics-1
Science	AP Physics 1	Spring-mass systems: Calculating frequency, period, mass, and spring constant	Exercise	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/spring-mass-systems-ap/e/spring-mass-oscillation-calculations-ap-physics-1
Science	AP Physics 1	Simple harmonic motion in spring-mass systems review	Article	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/spring-mass-systems-ap/a/simple-harmonic-motion-of-spring-mass-systems-ap
Science	AP Physics 1	Period and frequency of simple pendulums	Exercise	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/simple-pendulums-ap/e/simple-pendulum-ap1
Science	AP Physics 1	Simple pendulum review	Article	http://www.khanacademy.org/science/ap-physics-1/simple-harmonic-motion-ap/simple-pendulums-ap/a/simple-pendulum-ap1
Science	AP Physics 1	Using rotational kinematic formulas	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/angular-kinematics-ap/e/ram-cram
Science	AP Physics 1	Angular kinematics review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/angular-kinematics-ap/a/angular-kinematics-ap-physics-1
Science	AP Physics 1	Angular impulse calculations	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/angular-momentum-and-angular-impulse-ap/e/angular-impulse-ap-physics-1
Science	AP Physics 1	Angular momentum calculations	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/angular-momentum-and-angular-impulse-ap/e/angular-momentum-calculations-ap-physics-1
Science	AP Physics 1	Angular momentum and angular impulse review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/angular-momentum-and-angular-impulse-ap/a/angular-momentum-ap-physics-1
Science	AP Physics 1	Conservation of angular momentum	Video	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/conservation-of-angular-momentum-ap/v/conservation-of-angular-momentum
Science	AP Physics 1	Predicting changes in momentum during collisions	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/conservation-of-angular-momentum-ap/e/conservation-of-angular-momentum-qualitative-ap1
Science	AP Physics 1	Conservation of angular momentum calculations	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/conservation-of-angular-momentum-ap/e/conservation-of-angular-momentum-quantitative-ap1
Science	AP Physics 1	Conservation of angular momentum review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/conservation-of-angular-momentum-ap/a/conservation-of-angular-momentum-ap-physics-1
Science	AP Physics 1	Gravitational potential energy at large distances	Video	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/gravitational-potential-energy-ap/v/gravitational-potential-energy-at-large-distances
Science	AP Physics 1	Calculating gravitational potential energy of a system	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/gravitational-potential-energy-ap/e/gravitational-potential-energy-at-large-distances-quantitative-ap1
Science	AP Physics 1	Gravitational potential energy and conservation of angular momentum	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/gravitational-potential-energy-ap/e/gravitational-potential-energy-at-long-distances-qualitative-ap1
Science	AP Physics 1	Gravitational potential energy at large distances review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/gravitational-potential-energy-ap/a/conservation-of-angular-momentum-and-gravitational-potential-energy-at-large-distances-ap1
Science	AP Physics 1	Angular and tangential acceleration	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/introduction-to-angular-motion-ap/e/angular-quantities-ap1
Science	AP Physics 1	Introduction to rotational motion review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/introduction-to-angular-motion-ap/a/angular-quantities-ap1
Science	AP Physics 1	Angular acceleration and angular second law	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/rotational-inertia-and-angular-second-law-ap/e/conceptual-angular-second-law-exercises-ap1
Science	AP Physics 1	Predicting rotational inertia	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/rotational-inertia-and-angular-second-law-ap/e/conceptual-rotational-inertia-ap1
Science	AP Physics 1	Rotational inertia and angular second law review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/rotational-inertia-and-angular-second-law-ap/a/rotational-inertia-ap1
Science	AP Physics 1	Rotational kinetic energy	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/rotational-kinetic-energy-ap/e/rotational-kinetic-energy-exercises-ap1
Science	AP Physics 1	Rotational kinetic energy review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/rotational-kinetic-energy-ap/a/rotational-kinetic-energy-ap1
Science	AP Physics 1	Calculating torque	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/torque-and-equilibrium-ap/e/torque-calculations-ap-physics-1
Science	AP Physics 1	Equilibrium and applied force	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/torque-and-equilibrium-ap/e/torque-equilibrium-ap-physics-1
Science	AP Physics 1	Torque and equilibrium review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-torque-angular-momentum/torque-and-equilibrium-ap/a/torque-and-equilibrium
Science	AP Physics 1	Predicting changes in centripetal acceleration	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-acceleration-ap/e/centripetal-acceleration
Science	AP Physics 1	Change in centripetal acceleration from change in linear velocity and radius: Worked examples	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-acceleration-ap/v/change-in-centripetal-acceleration-from-change-in-linear-velocity-and-radius-worked-examples
Science	AP Physics 1	Deriving formula for centripetal acceleration from angular velocity	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-acceleration-ap/v/deriving-formula-for-centripetal-acceleration-from-angular-velocity
Science	AP Physics 1	Centripetal acceleration review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-acceleration-ap/a/centripetal-acceleration-ap-physics-1
Science	AP Physics 1	Identifying centripetal forces	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-forces-ap/e/centripetal-force
Science	AP Physics 1	Identifying centripetal force for ball on string	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-forces-ap/v/identifying-centripetal-force-for-ball-on-string
Science	AP Physics 1	Identifying centripetal force for cars and satellites	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-forces-ap/v/identifying-centripetal-force-for-cars-and-satellites
Science	AP Physics 1	Identifying force vectors for pendulum: Worked example	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-forces-ap/v/identifying-force-vectors-for-pendulum-worked-example
Science	AP Physics 1	Introduction to centripetal force	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-forces-ap/v/introduction-to-centripetal-force
Science	AP Physics 1	Centripetal forces review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/centripetal-forces-ap/a/centripetal-force-ap-physics-1
Science	AP Physics 1	Comparing gravitational and inertial mass	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/newtons-law-of-gravitation-ap/e/difference-between-gravitational-and-inertial-mass-ap1
Science	AP Physics 1	Newton's law of gravitation review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/newtons-law-of-gravitation-ap/a/newtons-law-of-gravitation-ap1
Science	AP Physics 1	Angular velocity and speed	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/introduction-to-uniform-circular-motion-ap/v/angular-velocity-and-speed
Science	AP Physics 1	Change in period and frequency from change in angular velocity: Worked examples	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/introduction-to-uniform-circular-motion-ap/v/change-in-period-and-frequency-from-change-in-angular-velocity-worked-examples
Science	AP Physics 1	Circular motion basics: Angular velocity, period, and frequency	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/introduction-to-uniform-circular-motion-ap/e/circular-motion-basics-exercises-ap1
Science	AP Physics 1	Connecting period and frequency to angular velocity	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/introduction-to-uniform-circular-motion-ap/v/connecting-period-and-frequency-to-angular-velocity
Science	AP Physics 1	Distance or arc length from angular displacement	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/introduction-to-uniform-circular-motion-ap/v/distance-or-arc-length-from-angular-displacement
Science	AP Physics 1	Linear velocity comparison from radius and angular velocity: Worked example	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/introduction-to-uniform-circular-motion-ap/v/linear-velocity-comparison-from-radius-and-angular-velocity-worked-example
Science	AP Physics 1	Radius comparison from velocity and angular velocity: Worked example	Video	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/introduction-to-uniform-circular-motion-ap/v/radius-comparison-from-velocity-and-angular-velocity-worked-example
Science	AP Physics 1	Uniform circular motion and centripetal acceleration review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-centripetal-force-and-gravitation/introduction-to-uniform-circular-motion-ap/a/circular-motion-basics-ap1
Science	AP Physics 1	Analyzing the interference of sound waves and beats	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/beats-and-interference-of-sound-waves-ap/e/beats-ap-physics-1
Science	AP Physics 1	Beats and interference of sound waves review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/beats-and-interference-of-sound-waves-ap/a/beats-and-interference-of-sound-waves-review-ap
Science	AP Physics 1	Doppler effect: Wavefront diagrams and word problems	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/doppler-effect-ap/e/doppler-effect-ap1
Science	AP Physics 1	Doppler effect review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/doppler-effect-ap/a/doppler-effect-ap1
Science	AP Physics 1	Wavelength and frequency for sound waves in tubes	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/introduction-to-sound-waves-ap/e/intro-to-sound-ap1
Science	AP Physics 1	Pressure and displacement of sound waves in tubes	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/introduction-to-sound-waves-ap/e/pressure-and-displacement-of-standing-waves-in-tubes-ap-physics-1
Science	AP Physics 1	Introduction to sound review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/introduction-to-sound-waves-ap/a/intro-to-sound-ap1
Science	AP Physics 1	Identifying transverse and longitudinal waves	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/introduction-to-transverse-and-longitudinal-waves-ap/e/transverse-and-longitudinal-wave-exercises-ap1
Science	AP Physics 1	Transverse and longitudinal waves review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/introduction-to-transverse-and-longitudinal-waves-ap/a/transverse-and-longitudinal-waves-ap1
Science	AP Physics 1	Wavelength and frequency for a standing wave	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/standing-waves-ap/e/standing-waves-ap-physics-1
Science	AP Physics 1	Calculating frequency for harmonics of a standing wave	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/standing-waves-ap/e/standing-waves-part-2-ap1
Science	AP Physics 1	Standing waves review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/standing-waves-ap/a/standing-waves-review-ap
Science	AP Physics 1	Calculating frequency and wavelength from displacement graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/wave-characteristics-ap/e/graphical-wave-equation-ap1
Science	AP Physics 1	Calculating wave speed, frequency, and wavelength	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/wave-characteristics-ap/e/numerical-wave-equation-ap1
Science	AP Physics 1	Characteristics of longitudinal and transverse waves	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/wave-characteristics-ap/e/wave-characteristics-ap1
Science	AP Physics 1	Wave energy from graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/wave-characteristics-ap/e/wave-energy-ap-physics-1
Science	AP Physics 1	Wave characteristics review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/wave-characteristics-ap/a/wave-characteristics-review-ap-physics-1
Science	AP Physics 1	Predicting wave interference patterns	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/wave-interference-ap/e/wave-interference-ap-physics-1
Science	AP Physics 1	Wave interference review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-mechanical-waves-and-sound/wave-interference-ap/a/wave-interference-ap1
Science	AP Physics 1	Conservation of energy: Predict changes in energy	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/conservation-of-energy-ap/e/conservation-of-energy-conceptual-exercises-ap1
Science	AP Physics 1	Conservation of energy: Numerical calculations	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/conservation-of-energy-ap/e/conservation-of-energy-law-ap-physics-1
Science	AP Physics 1	Law of conservation of energy	Video	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/conservation-of-energy-ap/v/law-of-conservation-of-energy
Science	AP Physics 1	Conservation of energy review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/conservation-of-energy-ap/a/conservation-of-energy-ap-physics-1
Science	AP Physics 1	Finding change in gravitational potential energy	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/conservative-forces-and-gravitational-potential-energy-ap/e/gravitational-potential-energy-ap-physics-1
Science	AP Physics 1	Gravitational potential energy and conservative forces review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/conservative-forces-and-gravitational-potential-energy-ap/a/gravitational-potential-energy-ap-physics-1
Science	AP Physics 1	Calculating work done by a force	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/introduction-to-work-ap/e/work-equation-ap-physics-1
Science	AP Physics 1	Calculating work from force vs. position graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/introduction-to-work-ap/e/work-graphs-ap-physics-1
Science	AP Physics 1	Introduction to work review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/introduction-to-work-ap/a/work-ap-physics-1
Science	AP Physics 1	Using the kinetic energy equation	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/kinetic-energy-ap/e/kinetic-energy-exercises-ap1
Science	AP Physics 1	Kinetic energy review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/kinetic-energy-ap/a/kinetic-energy-ap1
Science	AP Physics 1	Relating power and energy	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/power-ap/e/power-ap1
Science	AP Physics 1	Power review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/power-ap/a/power-ap1
Science	AP Physics 1	Calculating elastic potential energy	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/spring-potential-energy-and-hookes-law-ap/e/elastic-potential-energy-ap1
Science	AP Physics 1	Calculating spring force	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/spring-potential-energy-and-hookes-law-ap/e/hooke-s-law-and-spring-force-ap1
Science	AP Physics 1	Spring potential energy and Hooke's law review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/spring-potential-energy-and-hookes-law-ap/a/spring-force-and-energy-ap1
Science	AP Physics 1	Velocity and mass from force vs. position graphs	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/work-energy-theorem-ap/e/work-energy-graphs-ap-physics-1
Science	AP Physics 1	Calculating change in kinetic energy from a force	Exercise	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/work-energy-theorem-ap/e/work-energy-theorem-exercises-ap1
Science	AP Physics 1	Work-energy theorem review	Article	http://www.khanacademy.org/science/ap-physics-1/ap-work-and-energy/work-energy-theorem-ap/a/work-energy-theorem-ap1
Science	High school biology	Pedigrees	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-classical-genetics/hs-pedigrees/e/hs-pedigrees
Science	High school biology	Sex linkage	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-classical-genetics/hs-sex-linkage/e/hs-sex-linkage
Science	High school biology	Sex linkage review	Article	http://www.khanacademy.org/science/high-school-biology/hs-classical-genetics/hs-sex-linkage/a/hs-sex-linkage-review
Science	High school biology	Biogeochemical cycles	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-biogeochemical-cycles/e/hs-biogeochemical-cycles
Science	High school biology	Biogeochemical cycles review	Article	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-biogeochemical-cycles/a/hs-biogeochemical-cycles-review
Science	High school biology	Community ecology	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-community-ecology/e/hs-community-ecology
Science	High school biology	Community ecology review	Article	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-community-ecology/a/hs-community-ecology-review
Science	High school biology	Ecological relationships	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-ecological-relationships/e/hs-ecological-relationships
Science	High school biology	Ecological relationships review	Article	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-ecological-relationships/a/hs-ecological-relationships-review
Science	High school biology	Human impact on ecosystems	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-human-impact-on-ecosystems/e/hs-human-impact-on-ecosystems
Science	High school biology	Human impact on ecosystems review	Article	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-human-impact-on-ecosystems/a/hs-human-impact-on-ecosystems-review
Science	High school biology	Introduction to ecology	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-introduction-to-ecology/e/hs-introduction-to-ecology
Science	High school biology	Introduction to ecology review	Article	http://www.khanacademy.org/science/high-school-biology/hs-ecology/hs-introduction-to-ecology/a/hs-introduction-to-ecology-review
Science	High school biology	Trophic levels	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-ecology/trophic-levels/e/hs-trophic-levels
Science	High school biology	Trophic levels review	Article	http://www.khanacademy.org/science/high-school-biology/hs-ecology/trophic-levels/a/hs-trophic-levels-review
Science	High school biology	Evidence of evolution	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-evolution/hs-evidence-of-evolution/e/hs-evidence-of-evolution
Science	High school biology	Evidence of evolution review	Article	http://www.khanacademy.org/science/high-school-biology/hs-evolution/hs-evidence-of-evolution/a/hs-evidence-of-evolution-review
Science	High school biology	Evolution and natural selection	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-evolution/hs-evolution-and-natural-selection/e/hs-evolution-and-natural-selection
Science	High school biology	Evolution and natural selection review	Article	http://www.khanacademy.org/science/high-school-biology/hs-evolution/hs-evolution-and-natural-selection/a/hs-evolution-and-natural-selection-review
Science	High school biology	Phylogeny	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-evolution/hs-phylogeny/e/hs-phylogeny
Science	High school biology	Phylogeny review	Article	http://www.khanacademy.org/science/high-school-biology/hs-evolution/hs-phylogeny/a/hs-phylogeny-review
Science	High school biology	Body structure and homeostasis	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-human-body-systems/hs-body-structure-and-homeostasis/e/hs-body-structure-and-homeostasis
Science	High school biology	Biotechnology	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-molecular-genetics/hs-biotechnology/e/hs-biotechnology
Science	High school biology	Biotechnology review	Article	http://www.khanacademy.org/science/high-school-biology/hs-molecular-genetics/hs-biotechnology/a/hs-biotechnology-review
Science	High school biology	DNA structure and replication	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-molecular-genetics/hs-discovery-and-structure-of-dna/e/hs-discovery-and-structure-of-dna
Science	High school biology	DNA structure and replication review	Article	http://www.khanacademy.org/science/high-school-biology/hs-molecular-genetics/hs-discovery-and-structure-of-dna/a/hs-dna-structure-and-replication-review
Science	High school biology	RNA and protein synthesis	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-molecular-genetics/hs-rna-and-protein-synthesis/e/hs-rna-and-protein-synthesis
Science	High school biology	RNA and protein synthesis review	Article	http://www.khanacademy.org/science/high-school-biology/hs-molecular-genetics/hs-rna-and-protein-synthesis/a/hs-rna-and-protein-synthesis-review
Science	High school biology	Chromosomes	Exercise	http://www.khanacademy.org/science/high-school-biology/hs-reproduction-and-cell-division/hs-chromosome-structure-and-numbers/e/hs-chromosomes