Bound To Stay Bound

		How do seesaws go up and down? : a book about simple machines (How Do?)  Author: Shand, Jennifer  Publisher:  Flowerpot Press (2018)  Dewey: 621  Classification: Nonfiction  Physical Description: [32] p., col. ill., 21 x 21 cm  BTSB No: 805281  ISBN: 9781486714865  Ages: 7-10  Grades: 2-5  Subjects:  Simple machines
	Price: $5.73

Summary:
Beginning concepts of mechanical engineering, including levers, wedges, inclined planes, and more, are explored.