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With a library of over 2,400 videos covering everything from arithmetic to physics, finance, and history and 150 practice exercises, we're on a mission to help you learn what you want, when you want, at your own pace.

New & Noteworthy


Topics covered from very basic algebra all the way through algebra II. This is the best algebra playlist to start at if you've never seen algebra before. Once you get your feet wet, you may want to try some of the videos in the "Algebra I Worked Examples" playlist.

Algebra I Worked Examples

180 Worked Algebra I examples (problems written by the Monterey Institute of Technology and Education). You should look at the "Algebra" playlist if you've never seen algebra before or if you want instruction on topics in Algebra II. Use this playlist to see a ton of example problems in every topic in the California Algebra I Standards. If you can do all of these problems on your own, you should probably test out of Algebra I (seriously).

American Civics

Videos about how government works in the United States


Covers topics seen in a first year college or high school biology course.

CAHSEE Example Problems

Sal working through the 53 problems from the practice test available at for the CAHSEE (California High School Exit Examination). Clearly useful if you're looking to take that exam. Probably still useful if you want to make sure you have a solid understanding of basic high school math.


Topics covered in the first two or three semesters of college calculus. Everything from limits to derivatives to integrals to vector calculus. Should understand the topics in the pre-calculus playlist first (the limit videos are in both playlists)


Videos on chemistry (roughly covering a first-year high school or college course).

Cosmology and Astronomy

Videos attempting to grasp a little bit about our Universe

Developmental Math

Worked developmental math examples from the Monterey Institute. These start pretty basic and would prepare a student for the Algebra I worked examples

Developmental Math 2

Worked developmental math examples from the Monterey Institute (part 2). These start at Algebra I and would prepare a student for basic college mathematics.

Differential Equations

Topics covered in a first year course in differential equations. Need to understand basic differentiation and integration from Calculus playlist before starting here.


Videos on finance and macroeconomics

Geithner Plan

Khan Academy-Related Talks and Interviews

Collection of interviews with and presentations by Salman Khan. Also a few other mentions of Khan Academy at other talks.

Linear Algebra

Matrices, vectors, vector spaces, transformations. Covers all topics in a first year college linear algebra course. This is an advanced course normally taken by science or engineering majors after taking at least two semesters of calculus (although calculus really isn't a prereq) so don't confuse this with regular high school algebra.

MA Tests for Education Licensure (MTEL) -Pre-Alg

New and Noteworthy

Organic Chemistry

Topics covered in college organic chemistry course. Basic understanding of basic high school or college chemistry assumed


Projectile motion, mechanics and electricity and magnetism. Solid understanding of algebra and a basic understanding of trigonometry necessary.

SAT Preparation

I am going to work through every problem in the College Board "Official SAT Study Guide." You should take the practice tests on your own, grade them and then use these videos to understand the problems you didn't get or review. Have fun!


Introduction to statistics. Will eventually cover all of the major topics in a first-year statistics course (not there yet!) Algebra 1 Examples

Select problems from's Algebra 1 FlexBook (Open Source Textbook). This is a good playlist to review if you want to make sure you have a good understanding of all of the major topics in Algebra I.

Student Resource for College, Financial Aid and more.
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