Content

**Content**

 * Proof of Law of Commutative Multiplication (Taken from Steven Riche's wiki)**

I'm terrible at this and I know a lot of people still can't do this without looking up the "formula" to do it. However, there's a fundamental reason as to why you do the steps. I didn't "get it" until I saw it graphically (i.e. with shapes). Even in the khan academy videos, you don't really get to see it as pictures. Wikipedia, however, has a section that actually shows you how it's done geometrically: [] In case Wikipedia changes (which it often does), here is the image that should explain how to complete the square.
 * Completing the Square**

media type="youtube" key="pGaDcOMdw48?fs=1" height="385" width="480"
 * Law of Cosines (Derivation)**


 * Robin Kay Education Mini-Clips (link)**
 * Grade 9 Applied Math
 * Grade 10 Applied Math
 * Grade 11 College Math
 * Grade 11 University Math
 * Grade 12 College Math


 * Pre-Calculus
 * Calculus


 * Content Videos**
 * Math Videos Online []
 * I won't lie. I don't like this one. Even though the videos are clear, the woman who does them have a terrible delivery style. Her force is jarring and her tone is almost belittling. Keep this away from students.
 * Math Playground []
 * I really like this one. It has videos that are voiced (at least) by students. But the better part? It has //games//. Seriously, book the lab and just have your kids play games for a period. Worth it.
 * Math TV []
 * This one is decent. You have to have a login (Facebook works). It allows you to make playlists. The videos are of good quality thought I think the explanations are a bit... dry. They leave something to be desired. Still, a good resource.
 * Kahn Academy []
 * A favourite of mine. Sal has so much enthusiasm that it's hard not to pay attention to him. I don't like //all// the videos on this site but the majority of them are superb.