Khan Academy

A free world-class education for anyone anywhere.


The Khan Academy is an organization on a mission. We’re a not-for-profit with the goal of changing education for the better by providing a free world-class education for anyone anywhere.


All of the site’s resources are available to anyone. It doesn’t matter if you are a student, teacher, home-schooler, principal, adult returning to the classroom after 20 years, or a friendly alien just trying to get a leg up in earthly biology. The Khan Academy’s materials and resources are available to you completely free of charge.

How it works for students


Students can make use of our extensive video library, interactive challenges, and assessments from any computer with access to the web.

Complete custom self-paced learning tool
A dynamic system for getting help
A custom profile, points, and badges to measure progress

Coaches, parents, and teachers


Coaches, parents, and teachers have unprecedented visibility into what their students are learning and doing on the Khan Academy.

Ability to see any student in detail
A real-time class report for all students
Better intelligence for doing targeted interventions

Over 3400 videos


videos covers K-12 math, science topics such as biology, chemistry, and physics, and even reaches into the humanities with playlists on finance and history. Each video is a digestible chunk, approximately 10 minutes long, and especially purposed for viewing on the computer.
3400+ VideosOur library of
“I teach the way that I wish I was taught. The lectures are coming from me, an actual human being who is fascinated by the world around him.”
—Sal

A world of skills to practice, with help along the way


Practice math at your own pace with our adaptive assessment environment. You can start at 1+1 and work your way into calculus or jump right into whatever topic needs some brushing up.
A World of SkillsOur library of
Each problem is randomly generated, so you never run out of practice material. If you need a hint, every single problem can be broken down, step-by-step, with one click. If you need more help, you can always watch a related video.

Your stats, instantly


Every time you work on a problem or watch a video, the Khan Academy remembers what you’ve learned and where you’re spending your time. We keep all of this data private but expose powerful statistics to each user and their coaches. You get at-a-glance information about everything you’ve been learning and whether or not you’ve been hitting your goals.
See Stats InstantlyOur library of
You can drill all the way down from a bird’s-eye view of your profile into each and every skill practice problem that you’ve ever worked on. You’ll see real, hard data about your increasing mastery of math.

A map of knowledge


The knowledge map shows all of our challenges, skills, and concepts. You can zoom in and out and pan around all the different skills and challenges, just like on a normal map. You can start working anywhere on the map, and the Khan Academy will suggest the best skills for you to work on. We’ll even remind you when you need a review.
A Tree Of Knowledge
As you zoom out of the knowledge map, you’ll find our challenges, which combine the concepts from multiple smaller skills. Zooming all the way out of the map and completing all of our challenges is a sign of math mastery.

We’re constantly adding new skills to be discovered.

Your classroom data…finally


Teachers and coaches can access all of their students’ data. You can get a summary of class performance as a whole or dive into a particular student’s profile to figure out exactly which topics are problematic. The class profile lets coaches glance at their dashboard and quickly figure out how to best spend their time teaching.
Classroom Data
We’ve put a lot of energy into making sure that the Khan Academy empowers teachers by giving them access to the data they should’ve had for years. You’ll know instantly if a student is struggling in multiplying fractions…or if she hit a streak and is now far ahead of the class.

Badges worth bragging about

We’re full of game mechanics. As soon as you log in, you’ll start earning badges and points for learning. The more you challenge yourself, the more bragging rights you’ll get.
Badges Worth Bragging About
We’ve heard of students spending hour after hour watching physics videos and 5th graders relentlessly tackling college-level math to earn Khan Academy badges. Some of the smaller badges are very easy, but the most legendary badges might require years of work.

The academy can be found online here.

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