You will be getting some detailed instructions from Piotr about this lab, but here are a couple of links that you will need.
If you follow this link, you will see many folders and files. Piotr will tell you the ones he wishes you to check out (of course you can look at any of them!).
The idea of this section is that you will take recently assigmed problems and do a model with Sketchpad to test whether or not your answer is correct. There may be other points that are important to review before the midterm. The exact details will be provide.