It was a little bit of low energy to day. The classroom is too quiet. They probably think building a car with only gears is simple, But when I give them to try to fit a motor on the gear by themselves and told them that they can have some sort of reward if they can complete my task. Suddenly they are all energetic and even the kids haven’t finished yet is moving faster. I will teach students more about how to follow the booklet on next week since that’s the main reason a lot of them can’t finish in time for experiments. Wish next class will have more excitement for them.