{"product_id":"springbots-3-in-1-spring-powered-machines-stem-experiment-kit","title":"SpringBots: 3-in-1 Spring-Powered Machines - STEM Experiment Kit","description":"\n\u003cp\u003eBuild a motorized robot, race car, and countdown timer — all that run without any batteries or electrical power!\u003c\/p\u003e\n\u003cp\u003eThe secret behind these fascinating machines is a power source called a mainspring — a spiral-shaped spring that stores up energy when wound up by hand, and then converts that stored energy back into motion when it discharges. The mainspring inside the robot turns gears which enable it to march forward on two legs. The race car zooms across the floor as its mainspring uncoils and turns its wheels. The countdown timer uses a more complex system of springs, gears, ratchets, and linkages to slowly tick down the seconds as it discharges — for a countdown of up to six minutes. As you assemble these models one at a time from over 130 pieces, you will learn about the inner workings of spring-powered devices like wind-up toys and ticking mechanical clocks.\u003c\/p\u003e\n\u003cp\u003eDiscover the physics concepts of potential and kinetic energy as you experiment with your spring-powered machines. Easy, snap-together assembly requires no glue. The kit includes step-by-step illustrated instructions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\n\u003cspan\u003e3-in-1 engineering kit: build three self-powered models, then wind them up and watch them go!\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eLearn about potential and kinetic energy and how gears and springs function in different mechanical devices.\u003c\/li\u003e\n\u003cli\u003eRace car drives up to 45 feet.\u003c\/li\u003e\n\u003cli\u003eRobot walks on two legs, up to 20 inches.\u003c\/li\u003e\n\u003cli\u003eTimer counts down from up to 6 minutes.\u003c\/li\u003e\n\u003cli\u003eNo batteries or electricity required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFrom Thames \u0026amp; Kosmos\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eRecommended Ages 6 and up\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cbr\u003e \u003cspan\u003eExperiments: 3\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003ePiece Count: 133\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003eManual Pages: 64\u003c\/span\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eItem # \u003cspan\u003e550038\u003c\/span\u003e  \u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n","brand":"My Store","offers":[{"title":"Default Title","offer_id":50484336787679,"sku":"ZM9VD 6898071306287","price":26.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/9401\/6223\/files\/550038_SpringBots_3DBox.jpg?v=1782307362","url":"https:\/\/foothilltreasure.com\/products\/springbots-3-in-1-spring-powered-machines-stem-experiment-kit","provider":"Foothill Mercantile","version":"1.0","type":"link"}