Simple Machines Book Library - Gr. 4-6, Each

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Students Investigate The Power Of Pulleys, Explore First-Class And Second-Class Levers, Learn How To Make Their Own Machines And More—With Fascinating Books That Reinforce And Expand On The Themes Presented In Our Simple Machines Activity Tub - Gr. 4-6! Our Library Features Wonderfully Illustrated, High-Interest Titles That Make Concepts Super-Easy To Grasp. Set Includes 5 Paperback Books.,9 Yrs. - 11 Yrs. / 4Th Gr. - 6Th Gr.