Hello everybody! This week we started a whole new challenge, Simple Machine. It was easy to build but to understander simple physics in it, is challenging. For example, we build a lever but put the pivot point at different place to test out which point can we lift the easiest. It was the most successful class of all because it does not matter what step we were on, but to understand how it works. At the end of the class today, most of the students finished book 1 or close to finish book 1. We will try to finish book 2 in the next class. Hope all of you had fun.