Newton's Third Law By Farrah

I then asked them what would happen if I blew in between the balls (they predicted that each ball would move away from the air flow). I then demonstrated that when you blow in between the balls, they will move close to eachother instead of away. This brought on the discussion of other forces, such as air pressure and gravity. (The balls moved together because when I blew the air in between them, the moving air created a low pressure area. The high pressure area all around the ball, caused air to rush in to the low pressure area, taking the balls with it.) My kids really got a kick out of that.

We also took two marbles and tried to roll them into each other. You can see how the direction changes if you dip the marbles in paint first.