Category - Non Fiction / Children's

Format - Paperback

Condition - Good

Listed - 5 days ago

Views - 1

Ships From - Oregon

Est. Publication Date - May 2014

The Robotx bundle of 2 books

Publisher Description

Pressing Down explores the benefits and uses of the lever. RobbO and RobbEE learn how a lever can be formed in three different ways to do different kinds of work--lift and lower, separate, and open.