Inertia for Egg Heads

It was science fair time at Central School again. My least favorite activity they have at school mainly because it's difficult to find a science project that hasn't been done a million times and is fairly easy to do.
We searched some sites for kids and eventually came up with this one, (below) which we edited .
We titled it "Inertia for Egg Heads" and Riley did a good job of laying out her process on the poster board. She also had on hand a couple of eggs, one raw and one hard boiled, for people to try and guess which was which based on the principles explained in her Inertia presentation.

The photo above is of the marble roller coaster her class group also put together for the science fair. She spent a few days after school working on it.