Do corked bats really help a batter?
What happens if you change the quantities of ingredients in cookies?
Which types of fertilizer produces a greener lawn?*
I wonder if I can make my own fertilizer?*
How can I make the best compost?
On soccer PK's, does guessing really matter?
*How can I get fuel from algae?*
How can I create biodiesel?*
How can I create a low-cost water filter?
Does an under-inflated football provide a competitive advantage?
Does temperature affect the air pressure in a football?
Which surfaces create the most friction?
Do different wheels create different amounts of friction on a surface?
Do different nutrients affect plant growth differently?
How do different over-the-counter consumables affect plant growth (e.g. caffeine, different vitamins, aspirin, etc.)?*
*Parental/adult supervision recommended