I guarantee that you are going to want to start collecting pine cones when you see these beautiful crafts to make with them. And, now that Fall is almost here pine cones will be in abundance. Use nature's bounty so you can make beautiful Fall and Christma
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.