Simple Machines

Jumpstart your study of mechanical physics by learning
all about simple machines and how they’re used to make complex tasks easier to do. The seesaw at the playground, the wheelbarrow in your backyard, the flagpole in front of your school — all of these are examples of simple machines in the real world! So start building, investigating, and experimenting to discover how physics is all around us. 25 model building exercises 

Ages 8+