Description Grades 4 - 8. The Pulleys in Motion Class Set provides hands-on activities that give students practical experience with this simple machine. Includes 18 single pulleys, 12 double pulleys, and 12 triple pulleys along with spring scales, twine, pulley links and a 32-page resource guide! 70 pieces total!CPSC Choking Hazard Warnings: Choking_hazard_small_partsEducational Focus: Chemistry and physicsThis set provides hands-on activities that give students practical experience!Features 18 single pulleys, 12 double pulleys, and more.Includes a 32-page resource guide.70 pieces total. Estimated shipping dimensions: 4.8INCH X 9.7INCH X 13.5INCH Estimated shippimg weight: 3POUND
