PBS
Pbs Kids: Dragonfly Tv Do It: Balloon Hovercraft
PBS site allows you to discover how air pressure works as you learn how to build your own hovercraft.
PBS
Pbs Kids: Dragonfly Tv Do It: Grow a Crystal
This PBS Kids site teaches students about crystals and includes an activity that shows how to make sparkling gems at home.
PBS
Pbs Kids: Dragonfly Tv: Know How? Cutting a Rock
How can you cut a rock without a saw? Is it possible? PBS site invites you to come along with Mike and Victor to find out.