Industrial House Numbers Is it time to replace your house number sign? This project is very simple and easy yet brilliant. It is creative and also a more secure sign that can survive a typhoon. (My old house number was destroyed by a strong one two yea
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.
7 Hábitos para uma fala mais cativante e impressionante