Aha! Experimenta is trying to find out if a potato can float. She’s given it a tiny life-jacket but it’s still sinking! There must be a better way to test her ideas. A) The Story of a Great Idea and a Silly Test. B) You want to know which paper boat is the fastest. Do you test them in a puddle or in the bathtub? C) Let's make a prediction: will a feather or a crayon fall faster?