First Step Nonfiction: Simple Machines To The Rescue 6-Book Set
Master Simple Machines With This Fun And Practical Book Set
This series allows readers to compare simple machines to see which one works best in a particular situation. Each book sets up a problem. Kids and families test two simple machines and determine a winner. Includes glossary and index.
Playing a Game: Inclined Plane vs. Lever
Holding a Door Open: Wedge vs. Wheels and Axles
Going Ice Fishing: Lever vs. Screw
Hauling a Pumpkin: Wheels and Axles vs. Lever
Making a Salad: Wedge vs. Inclined Plane
Raising a Bag of Toys: Pulley vs. Inclined Plane
- 6 softcover books
- Size: 6?" by 7"
- 24 pages each