Free Online Classes & Video Tutorials
A growing number of videos, exercises and lesson plans for self-paced learning.
The majority of video content on this page is provided by Khan Academy, a nonprofit organization with a mission to provide a free, world-class education for anyone, anywhere.
We are deeply grateful to Khan Academy for making these educational resources freely available to learners worldwide. Visit Khan Academy →
Featured Video Lessons
SAT Prep
Reading: Science — How-to Part 1
Watch Sal work through Part 1 of an SAT Reading: Science passage.
Economics
1. Why Finance?
SAT Prep
Volume word problems — Basic example
Watch Sal calculate the volume of a partially filled right rectangular pyramid.
Math
Angle Basics
Definition of an angle. How to denote an angle using points on the angle (including the vertex)
Algebra I
16 videos
Khan Academy: History of the World
16 videos
Algebra: Introduction to Algebra
4 videos
Algebra: Solving Linear Equations
60 videos
Geometry: Angles
35 videos
Geometry: Basic Geometry
8 videos
About the SAT
5 videos
Additional Topics in Math
15 videos
Heart of Algebra
18 videos
Passport to Advanced Math
28 videos
Problem Solving & Data Analysis
20 videos
Reading & Writing
43 videos
Khan Academy: Biology
14 videos