Sewn Backtogether

I was looking for this too. The closest khanacademy has is a brief intro under javascript, and no practice problems. https://www.khanacademy.org/computing/computer-programming/programming-natural-s...

1. Hamjamiyat
2. Content Requests and Feedback
3. Request for Content: Precalculus Polar Coordinates, Polar Equations and Graph of Polar Curves