A video proving the Fundamental Theorem of Calculus.

Sal Khan offers a correction to his Quasar video. [1:45]

Learn about how hypertension can cause damage to the large/middle sized arteries as well as the small arteries and arterioles. Rishi is a pediatric infectious disease physician and works at Khan Academy. [7:09]

Students watch a video tutorial to learn about the divergence theorem.

More on mortgage-backed securities presented by Sal Khan. [9:19]

Part 5 of building the battery operated "beetle bot," Spout.

Understand how a housing bubble can destroy wealth. [10:31]

Overview of how hedge funds are different than mutual funds. [3:32]

Converting decimals to fractions.

Learn how the Mantoux test is done and how it works. Rishi is a pediatric infectious disease physician and works at Khan Academy. [8:37]

A video thinking about pensions, defined benefit plans, defined contribution plans and how pensions tend to get underfunded. [10:07]

See how arteries behave like sling shots, shooting blood (not rocks) onwards! [6:21]

A Khan Academy teaching video which gives an overview of the initial rise of Adolph Hitler and the Nazis.

Video lecture helps in the understanding of asthma by learning the mechanics of breathing, and how breathing air in is quite different from breathing air out. [12:03]

A video demonstrating how to solve a problem involving time.

Understand how to connect the power and signal wires of the Spider bot from the motor controller to the Arduino. [2:05]

Every time you take a breath, oxygen makes it way into your lungs. Follow along on that journey! Rishi is a pediatric infectious disease physician and works at Khan Academy. [9:36]

An introduction to torque. [9:25]

The beginning of a proof of Stokes' theorem for a special class of surfaces.

In this video we go inside a tap light to discover what is inside and how it works. [6:02]

Watch the pressure in the left heart go up and down with every heart beat! Rishi is a pediatric infectious disease physician and works at Khan Academy. [12:44]

Supernova clarification based upon Sal Khan's lesson on supernovae that the explosion was observed 1,000 years ago, but the actual event was 7,500 years ago. [1:31]

Khan Academy delves into supernova (Supernovae) in this video lesson. [11:57]

Learn the two ways that oxygen moves from the lungs to the tissues, and the three ways that carbon dioxide returns from the tissues to the lungs. Rishi is a pediatric infectious disease physician and works at Khan Academy.