Khan Academy allows you to learn almost anything for free.
In our iPhone app:
- You can learn anything – for free: Over 10,000 videos and explanations at your fingertips in math, science, economics, history, and much, much more
- Sharpen your skills: over 40,000 interactive Common Core aligned practice questions are included with instant feedback and step-by-step hints. Follow along with what you’re learning in school or practice at your own pace
- Quickly find what you need: Redesigned ...
Algebra, ASC-Education, banking, chemistry, finance, Geometry, khan academy, Maths, physics, Trigonometry