Description: This is a Khan Academy app that teaches about the clock angle problem. Through this tutorial, the users can learn how to calculate the angle between the two hands of a clock.
How It Works: There are two modes in this progam. There is a tutorial mode that guides you through the entire calculatinon process set with clear animations and explanations. Another mode is the challenges mode that allows to you generate a new problem for you to figure out and interact with the clock. Let's see how good you can get with this problem!