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$49.99
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Turn physics into a thrill ride with Thames & Kosmos Roller Coaster Engineering. Kids snap together sturdy frame structures and flexible track to build and test their own coasters, then change the slope, length, direction and car weight to see what happens. A full-color manual walks them through every model and experiment along the way! Why We Love It Build and test dozens of roller coaster designs Learn how force, motion and energy work by experimenting Modular building system with frames and flexible track Full-color illustrated manual with step-by-step instructions Good to Know Ages 6+ with help, 8+ on their own 305 pieces, 20 experiments and a 32-page manual No batteries required
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