Balloon Rockets - I've done this in several science camps I've conducted. Kids have fun with it. But, when the balloon deflates it may fall off the straw because it's surface area changes - another good thing to show and explain to kids.
A couple months ago my son and I were going through the enormous tub of LEGOs, trying to decide what to do with them. We have so many that no one plays with all of them. The pieces from multiple sets are all mixed together. We could build a city, but no real place to … … Continue reading →