Born in 1564 this Italian physicist and astronomer is famous for his experiments dropping objects from the leaning tower of Pisa. You can conduct your own simple falling object experiments using two items that are different in weight – a piece of paper, feather or cotton ball dropped at the same time as a crayon or a stone – or whatever you can think of. Try different combinations with the children and record the results. Be sure not to drop anything breakable or where another person might be standing.

Check out this video that shows the experiment  http://www.youtube.com/watch?v=WOdLFKPYNuc