12th Grade Roller Coaster Expositions

Today during Computer Class, we went to watch the 12th grade exposition about their Physics Project. They had to do a roller coaster that transported a marble from one side of the board to the other side. I found all the projects really cool but the one I most liked was the one with the one from Erika Zinser and the one with the Candy Mountain theme. I really liked Erika's because it was really cool how the marble, going through a plain route, went up the spiral TWO times! In my opinion that looked pretty amazing. The other roller coaster that I liked, the Candy Mountain one, was also pretty cool because it had REAL candy and, in my opinion, they were the team that worked the hardest because their track were the marble had to go through was the most delicate one, being made out of two plastic, flexible sticks. Most teams used real tubes were the marble would have no option of falling down, which I think that is cheating. The Candy Mountain's track wasn't completely closed so I think that was way more laborious.