{"product_id":"boston-childrens-museum-activity-books-raceways-having-fun-with-balls-and-tracks-bernie-zubrowski-roy-doty-illustrator","title":"Boston Children's Museum Activity Books Raceways: Having Fun With Balls and Tracks Bernie Zubrowski, Roy Doty (Illustrator)","description":"\u003cspan class=\"Formatted\" data-mce-fragment=\"1\"\u003eOffers detailed instructions for setting up games and experiments involving balls and tracks, and discusses momentum, acceleration, gravity, friction, and potential and kinetic energy\u003c\/span\u003e","brand":"Ex Libris Used Books","offers":[{"title":"Default Title","offer_id":44141099548899,"sku":"EXL1439","price":2.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0562\/5675\/7951\/files\/1439663.jpg?v=1699993829","url":"https:\/\/www.exlibrismichigan.com\/products\/boston-childrens-museum-activity-books-raceways-having-fun-with-balls-and-tracks-bernie-zubrowski-roy-doty-illustrator","provider":"Ex Libris Used Books","version":"1.0","type":"link"}