Exam prep

I did the take home test for size and scale again. I understood most of it. However, I think I just need to go over converting units a bit more. I get a little confused when it comes to that. I'm fine when it's something like mm to m. However, for example, if it's mm to km, then I get a little confused. In addition, I looked over the study guide for the exam. I'm confident about the circuits area. However, I need some work on sound waves and beats. I will prepare for this by going over the worksheets we got earlier this year. I will complete them to the best of my ability.