DIY: TI-83 DRAW Function Tutorial

My video shows how to find the tangent line of a graph using DRAW function on the calculator. I have learned that it is difficult to find the tangent line without using calculator. Therefore, I made this tutorial to help students in finding the tangent line. To make the video, I used my camera and a TI-83 calculator. Below is the video:

[youtube]http://www.youtube.com/watch?v=viLSeBvaCCI[/youtube]