Before diving into the actual calculus, let's review those Warm-Up questions to prep us for investigating, deriving, and using this thing called the Chain Rule. In case you haven't heard, it has something to do with composite functions. Duration: 5:48

A machine with various gears is the obligatory metaphor teachers use to illustrate the Chain Rule in action. I am one such teacher. Duration: 3:59

If your LEGO collection supports it, try building these three simple machines. The first, small machine functions as f(x), the exterior function, while the second, medium machine functions as g(x) the interior function. The third, large machine is h(x), the composition of the other two.

Confused on how to start the Chain Rule Investigation? Here, allow me to walk you through the first part of it. Duration: 3:06

Still not connecting the dots? Let's take a deeper look by examining each derivative of a composite function as a composite function. Duration: 5:02