Notes on KhanAcademy video's

I will upload Notes on Khanacademy video's, anyone is free to use these notes as a studying companion.
If you are as enthousiastic about the KhanAcademy as I am, you are free to help me and e-mail your notes to notesonkhan@gmail.com.
I will monitor the amount of views on all pages, and upload notes on video's connected to the most viewed ones.

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Link to Vi Hart
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Dividing Fractions                                                  Exercises on Dividing Fractions (Answers included)
Gradient of a scalar field
Differential Equations
Separable Differential Equations
Separable Differential Equations 2
Language and Notation of Basic Geometry
The Chain Rule                                                       Chain Rule Exercises (answers included)