So, I didn’t finish my crank on time during that unit, so I had to work on it the past few weeks, but I FINALLY finished it! It is kind of like the cam, you have to turn a wheel on the side that makes a little bar on the inside go round and round. But on this bar it curves to make a gap in the middle, and a pole is attached to that bar. When you turn the bar it makes the pole rise and fall from the top, but also rotate vertically. The whole thing is, once again, made of paper. I have had to come in during multiple lunches to finish it.