Last Thursday we took on a new challenge. We wondered: What do we have to do to move heavier objects? We worked in three stations. In the first, we timed how long it took to push a crate of paper towels and a crate of notebooks the same distance. In the second, we rolled a baseball, a whiffle ball, and a tennis ball down a ramp to push a wooden car. We measured which ball moved the cars the furthest. In the third, we blew on a wooden block and a foam block. We discovered that we need to use more force to move heavier objects and that more force — in the case of the baseball and toy car — makes an object move further.