Curently in science class, we are building rollercoasters to help learn about friction, and gravity. It sounds fun and suprisingly, it is, thought it is not as easy as it sounds. We need at least three hills and lots of turns or twists. In order to even be graded a marble must be able to run continously through the coaster. Not to mention, we are making it only out of common household like papertowel rolls and cereal boxes. Our final product was due today but unfourtanetly, I was out sick today so I am very anxious to see the how it turned out. We started making plans and building on monday so, we didn't have a whole lot of time to make it, so we did the most we could with the time alowed.
