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.
Happy Earth Day everyone! In honour of this special day I’ve rounded up 25 recycled tin can crafts and projects. I am amazed at all the incredible things one can do with a simple tin can! Take a peek at all these fun ideas! Chalkboard Paint Tin Can Pots