Videos

[|Khan Academy]
 * This is a website that has videos for EVERYTHING in just about every subject!

Rational Root Theorem Video
 * This is a MyMathLab video about using the **rational root theorem** to find the **zeros of polynomial functions**. It does NOT mention **Descartes' Rule**. Remember you don't have to know Descartes' Rule to find the roots, it is just a tool to help you know that your answer is correct. Also, remember that the rational root theorem doesn't actually find the answers, it only tells you where to start. You have to use **synthetic division** to test if the potential roots work or not.

Drawing an Ellipse
 * This video is the basis for the **ellipse** project. It is based on knowing the lengths of the **major axis** and the **minor axis** to construct an ellipse. We started instead by knowing the location of the **foci**.

Moving the Foci of an Ellipse
 * This is an interactive page that allows you to see how the position of the **foci** affect the **ellipse**. It may also help you understand the significance of the **eccentricity** of an ellipse.