Pencasts

“Pencasts are the new Video” – Thomas Edison*

Well, they’ve finally done it! They’ve made a pen that can record everything you write and everything you say, and then spit it back out in video form. What an age we live in!

In the Pencasts below, you can watch line-by-line as Doc works through the algebra and you can hear him explaining it at each step of the way!
 
 

* Probably not a direct quote