Download or read book Let's Go to the Playground written by Ruth Walton and published by Sea to Sea Publications. This book was released on 2012-12-31 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Discusses simple physics, including levers, and forces, including gravity and centrifugal force, that are present when playing on a playground. Includes science experiments that demonstrate forces"--