I reviewed the significant digit rules with Marcel and showed him a mnemonic device for remembering how to treat zeros in determining the number of significant digits in a number. Since he was not at the school when I would have worked with him on this topic, I decided it was time to work on this important topic.
After I did some examples of significant digits, I started to work a problem on conservation of momentum with Marcel. Due to our work on significant digits, we did not have time to finish the problem. I will work with him on the problem during our next session. There was no assignment.