Proofs: Math Videos

This series walks through proofs of important results in math. You will see why the quadratic formula works, how proof by induction works, and why key rules of logarithms and calculus are true. You will also prove how to find the best-fit line for data. Proofs build deep understanding and careful thinking. The level varies from Algebra 2 to college calculus and physics.

Note: All Khan Academy content is available for free at www.khanacademy.org