We greatly appreciate your patience as we've navigated the challenges of the last several months, and we sincerely hope you've been able to grow and find comfort in learning on Khan Academy. Because we haven't had a Content Update post since February, we have a mega update for you! See below for what's new at Khan Academy, organized by month.

March
Math
Arts and Humanities
Science
Computing
Test Prep
Resources

April
Arts and Humanities
ELA Beta
Partner Content
Economics and Finance
Math
Science
Test Prep

May
Science

March

ELA Beta, AP Chemistry Beta, and AP Biology got their own updates! See the new content for ELA Beta here, for AP Chemistry Beta here, and for AP Biology here.

Math

5th Grade (Videos)

6th Grade Foundations (Eureka Math/EngageNY) (Exercise)

Adding and subtracting decimals word problems

Arts and Humanities

Art of the Americas to World War I (Videos)

AP Art History (Video)

From quills to beads: the bandolier bag

Special Topics in Art History (Videos and Articles)

The Pueblo Modernism of Velino Shije Herrera (Video)
Visiting the Lower East Side in 1905 (Video)
A magical landscape (Video)
Family, Community, Society (Article)
"The place you ought to be" (Article)
"America the Beautiful" (Article)
Art is a conversation with time (Article)
"What a fascinating modern age we live in" (Article)
Majority to minority and back again (Article)

Europe 1300 - 1800 (Video)

Europe's earliest views of America

Global Cultures 1980 - Now (Videos)

Modernisms 1900-1980 (Videos)

AP US Government and Politics (Videos and Article)

Groups influencing policy outcomes (Video)
Policy and the branches of government (Video)
Groups influencing policy outcomes: lesson overview (Article)

Science

AP Chemistry (Videos)

Health and Medicine (Exercise)

Intermediate urinary system quiz

Class 10 Chemistry (India) (Videos and Exercises)

Functional groups (Video)
Covalent bond (Video)
Covalent bond and Lewis dot structure (H2O & CO2) (Video)
Structural Isomers | Carbon and its compounds (Video)
Structural (constitutional) isomers (Video)
Nomenclature of carbon compounds (Including functional groups) (Video)
Hydrocarbon overview: Alkanes, Alkenes, and Alkynes (Video)
Alkanes, Alkenes, and Alkynes- General molecular formula (Video)
Nomenclature of hydrocarbons: Alkanes, Alkenes, & Alkynes (Video)
Identify the functional groups (Exercise)
Name the carbon compounds (Exercise)
Name the unsaturated compounds (Exercise)
Alcohol reacting with conc. sulphuric acid (Exercise)
Alcohol reacting with sodium (Exercise)
Saponification reaction (Exercise)
Homologous series: General formula (Exercise)
Esterification reaction (Exercise)
Roles of sulphuric acid & sodium in alcohol (Exercise)

Class 10 Physics (India) (Videos, Exercises, and an Article)

Formation of rainbows (& how far are they) (Video)
Overload & short circuit: Domestic circuits (Part 3) (Video)
Domestic circuit connection & fuse - Domestic circuit (Part 2) (Video)
Live wire, neutral & ground (earth wire) - Domestic circuits (part 1) (Video)
Alternating current, direct current & what is frequency? (Video)
Using the lens formula (Exercise)
Paths of light rays through spherical lenses (Exercise)
Snell's law of refraction (Exercise)
Connection between relative and absolute refractive indices (Exercise)
Review and practice - parts of the human eye: features and functions (Article)

Computing

AP Computer Science Principles (Articles)

Test Prep

SAT Tips and Strategies (Articles)

Official LSAT Prep (Article)

A quick guide to conditional logic

Resources

Teachers (Articles)

Parents (Articles)

April

The World History Project - Origins Beta and AP Biology got their own updates! See the new content for World History Project - Origins Beta here and for AP Biology here.

Arts and Humanities

AP US History (Video)

Quick guide to the 2020 AP US History exam

Art of Africa (Article)

Olowe of Ise, Veranda Post of Enthroned King and Senior Wife

Art of the Americas to World War I (Videos)

Art of the Islamic World (Video)

The complex geometry of Islamic design

Europe 1300 - 1800 (Video and Articles)

Why Is This Woman in the Jungle? (Video)
The Medieval and Renaissance Altarpiece (Article)
Iconoclasm in the Netherlands in the Sixteenth Century (Article)

Global Cultures 1980 - Now (Video)

An American story

Modernisms 1900-1980 (Videos and Article)

Cuban cigars, Cuban independence (Video)
Cars, highways, and isolation in Postwar America (Video)
Robert Rauschenberg, Erased de Kooning Drawing (Article)

Seeing America (Videos and Articles)

Specials Topics in Art History (Videos and an Article)

Cotton, oil, and the economics of history (Video)
Celebrating America's place in the world (Video)
Cuban cigars, Cuban independence (Video)
Revisiting a frozen sea (Video)
Cars, highways, and isolation in Postwar America (Video)
An American story (Video)
Mending America, women and the Civil War (Video)
From "New World" to world power (Article)

Start Here (Approaches to Art History) (Video)

ELA Beta

2nd Grade Reading and Vocabulary (Video)

Messages and morals | Reading

3rd Grade Reading and Vocabulary (Videos)

4th Grade Reading and Vocabulary (Videos)

5th Grade Reading and Vocabulary (Videos)

6th Grade Reading and Vocabulary (Video and Exercises)

7th Grade Reading and Vocabulary (Exercises)

8th Grade Reading and Vocabulary (Exercises and Articles)

Funny business: vocabulary; A Midsummer Night's Dream 8 (Exercises)
Funny Business: reading informational text; This Is Your Brain on Comedy 8 (Exercises)
Funny business: reading realistic fiction; Use What You Have 8 (Exercises)
Funny business: reading realistic fiction; An Uncomfortable Bed 8 (Exercises)
Funny Business: reading drama; A Midsummer Night's Dream 8 (Article)
Funny Business: unit vocabulary (Article)
Welcome to the Funny Business unit! (Article)

9th Grade Reading and Vocabulary (Exercises and Articles)

Borders: vocabulary; Mending Wall 9 (Exercises)
Borders: reading argumentative text; Border Walls 9 (Exercises)
Borders: reading poetry; Mending Wall 9 (Exercises)
Borders: reading a speech; Reagan at the Brandenburg Gate 9 (Exercises)
Borders: reading informational text; Berlin Wall 9 (Exercises)
Borders: unit vocabulary (Article)
Welcome to the Borders unit! (Article)

Partner Content

Big History Project (Videos and Article)

Exploratorium (Video)

Build it: What you'll need to model Soap Film Interference

Economics and Finance

Macroeconomics (Videos)

Math

Class 7 Math (India) (Exercise)

Linear equations word problems (basic)

Class 8 Math (Foundation) (Exercise)

Linear equations word problems (basic)

Class 8 Math (Foundation - Hindi) (Exercise)

Linear equations word problems (basic)

Science

AP Chemistry Beta (Exercise)

Kinetic molecular theory

Class 10 Chemistry (India) (Videos and Exercises)

Given atomic number find position and vice-versa (Solved example) (Video)
The modern periodic table (Video)
Periodic trend of valency (Video)
Periodic trend of Metallic character (Video)
Ionization energy trends in periodic table (Video)
Find the valence electrons (Exercise)
Electronic configuration of elements: KLMN shells. (Exercise)
Identify the elements belonging to the same group or period (Exercise)
Groups and periods: find the atomic number (Exercise)
Find the group and period of an element (Exercise)
Periodic classification: Identify the laws (Exercise)
Periodic trends of atomic size (Exercise)
Valency: Write the formula of a compound (Exercise)
Find the valency of an element (Exercise)

Test Prep

Official SAT Practice (Articles)

May

Science

Class 10 Chemistry (India) (Exercises)

ＫＥＶＩＮ

22:14 Ngày 03 tháng 07 năm 2020
Đã sửa

KA: Mega thank you for posting this! Awesome!

Regina Litman

22:16 Ngày 04 tháng 07 năm 2020

Thank you for bringing us up-to-date on this! But can you please let us know if the following videos were also added in any of these months? I thought I went through the Chemistry playlist that includes them, but they show up now with no check mark showing that I haven't viewed them. I am usually pretty diligent about watching everything and making sure I am watching them all the way through in order to get the check marks.

Chemistry -> Electronic structure of atoms -> Electron configurations -> Shells, subshells, and orbitals
Chemistry -> Electronic structure of atoms -> Electron configurations -> Introduction to electron configurations
AP Chemistry -> Electronic structure of atoms -> Electron configurations -> Shells, subshells, and orbitals
AP Chemistry -> Electronic structure of atoms -> Electron configurations -> Introduction to electron configurations

The AP Chemistry referred to above is the older one, not the Beta one.

Again, thank you for keeping us up-to-date on these!

Faile

20:39 Ngày 07 tháng 07 năm 2020

Hi Regina! I'm checking into this for you, and as soon as I hear back I'll share the answer. :)

15:44 Ngày 08 tháng 07 năm 2020

Hi again Regina! Here's what I heard back from our content superhero: "Both "Shells, subshells, and orbitals" and "Introduction to electron configurations" are relatively new (added Dec. 2019), and both replaced older videos that had errors ("Orbitals" and "More on orbitals and electron configurations" for the first video, and "Electron configurations 2" for the second)."

Hope this helps!

00:02 Ngày 09 tháng 07 năm 2020

@... Thanks for the response. I found the post made "6 months ago" with the December updates (and since I'm using my Windows laptop with a mouse, I was able to hover over it and see that the date was January 6, 2020). Several Chemistry videos are listed, but these two were not. Maybe because they were replacements rather than brand new ones, they got overlooked for the listing. I started the Chemistry course some time in late 2019, so I probably viewed the old videos when they were still posted.

I will also check on the eight that were listed in the January 6 post to see if I have seen them yet or not. I am currently on a hiatus from my Chemistry studies due to concentrating on courses that are going away in a week.

(I really wish you folks had also posted the announcement of the disappearing courses in this section, too, so I could have seen it sooner, plus I would have preferred more notice, perhaps a similar lead time as that given to the removal of the Missions. It would be nice if a big donor would step in and give all or at least some of the courses that are being retired at least a temporary reprieve.)

00:23 Ngày 09 tháng 07 năm 2020

@...

***** CORRECTION *****

"Introduction to electron configurations" was listed in the January 6, 2020, post, but "Shells, subshells, and orbitals" was not.

I also found two others from earlier in my Chemistry course of study that don't have check marks and are presumably new:

Chemistry -> Atoms, compounds, and ions -> Introduction to the atom -> The mole and Avogadro's number
Chemistry -> Chemical reactions and stoichiometry -> Molecular composition -> Worked example: Determining an empirical formula from percent composition data

I had probably progressed beyond these playlists by the time they were posted. Viewing all of these new ones will give me a partial refresher once I return to Chemistry next week.

Thanks again for all of the updates.

Content Update: Mega Edition! (March/April/May 2020)

March

Math

Arts and Humanities

Science

Computing

Test Prep

Resources

April

Arts and Humanities

ELA Beta

Partner Content

Economics and Finance

Math

Science

Test Prep

May

Science

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