HOT Air Balloon Fun project to do with your kid for the science fair. Good way to show the effects of hot air.
How to make solar energy panels completely from scratch. Specifically what you need to have with respect to components, accessories and plans and blueprints. What you need to understand about the whole process. http://netzeroguide.com/how-to-build-a-solar-panel-from-scratch.html homemade solar panel
Invisible Ink --- Who knew lemons, milk, and vinegar could be used to write secret messages? Your child will discover the wonders of chemistry and acidic properties by creating invisible ink, and will love sending his friends covert messages on seemingly
Make a Photon Flower That Lights Up When You Water It With Lemon Juice