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# Blue-Ice

Math is like the gym of the mind; it sharpens and strengthens it. Plus it's gooder and funner than English.

• Or make an option to add our own background.

• It would be way cooler if they have animated backgrounds. _lOoOl_

• Even in Dark mode it looks bad. The background turns brown.  Now my avatar is swimming in muddy waters instead of soaring through the cosmos.

• Guys, just downvote this post.  A post with -20 votes and more is bound to be looked at. -_- haha i meant the original post

• As a junior in high school, I am very hurt when you say Khan Academy is for kids.  While losing the backgrounds does make KA seem a bit less exciting, they do provide alot of useful information for...

• Hello RichK, Each unit will usually take 3-6 hours (watching the videos; reading the articles; doing the practices, quizzes, and tests).  PreCalculus has 9 units, so about 27-54 hours total. Before...

• Hello Sara Mehjabin, To get to the comments of a video, click the blue title of the video.  That should take you to a page with the video and its transcript. To look at all the comments of that cou...

• If you need a list for the Differential and Integral Calculus Courses, go to this post: https://support.khanacademy.org/hc/en-us/community/posts/360076930311-Total-video-length-of-videos-in-the-Dif...

• Calculus 1 Limits and continuity number of videos: 62 video time: 5hr 55min articles: 5 practices: 35 quizzes: 6   Derivatives: definition and basic rules number of videos: 56 video time: 5hr 33min...

• Precalculus Complex numbers Videos: 22 Video time: 2hr 6min Articles: 12 Practices: 20 Quizzes: 5   Polynomials Videos: 20 Video time: 1hr 45min Articles: 2 Practices: 8 Quizzes: 3   Composite func...

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