{"product_id":"pendulums-grades-4-9-paperback","title":"Pendulums: Grades 4-9 - Paperback","description":"\u003cp\u003eby \u003cb\u003ePeg Marson\u003c\/b\u003e (Illustrator), \u003cb\u003eRonald Jay Marson\u003c\/b\u003e (Author)\u003c\/p\u003e\u003cp\u003eTime pendulums, count cycles, measure lengths, graph data, predict frequency, calculate ratios, and even discover the square root of two. Couple pendulums with a rubber band to watch the energy flow back and forth. Join four pendulums with a raft of heavy books and watch the complex harmonic motion draw a seashell pattern. Great science, great math, great art, all done with simple materials.\u003c\/p\u003e\u003cdiv\u003e\n\u003cstrong\u003eNumber of Pages:\u003c\/strong\u003e 66\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.14 x 11 x 8.5 IN\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003ePublication Date:\u003c\/strong\u003e April 17, 2019\u003c\/div\u003e","brand":"Books by splitShops","offers":[{"title":"Default Title","offer_id":42129648189575,"sku":"9780941008556","price":35.03,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/2623\/2711\/files\/ee74b35935f31c3ce69e14275c9473e3.webp?v=1732604670","url":"https:\/\/booksby.splitshops.com\/products\/pendulums-grades-4-9-paperback","provider":"Books by splitShops","version":"1.0","type":"link"}