Build the Lego hammer, mimic the nail drive, make a presentation. Students conducted the experiment to observe how many times are needed to hit the axis into the anvil. During the experiment, the students need to change the cam wheel position, so the potential energy of the hammer varies thus the kinetics energy. The STEM information behind this section is the energy transformation between the potential and kinetics energy as well as friction forces. All the students finished the model building part and did the experiment with different level. Did you see some rolling hammer car before? here you go! Kevin build a very unique hammer car!
