Addie had her first science fair! She had to chose an invention, a force, magnets, or a scientist to learn about...clearly Mike thought of something suitably science-y for our little lady.
Okay...check out Addie explaining her gravity project:
In case you didn't know...gravity affects all objects the same, regardless of weight...so two objects with different weights will hit the ground at the same time. Galileo first did the experiment in the 1589. I might have "relearned" that right along with Addie.
Just here to help you learn too.