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Assemble a real working battery-powered 4-cylinder model engine with real lights and sounds. Watch the spark plugs fire and the valves open and close in this Popular Mechanics Motor Works Engine. Ages 8 and up. (More)
Make and dissect a frog that looks and feels real! The frog is easy to prepare: simply mix molding solution and pour over a plastic molded frog inner parts. Ready to dissect in 15 minutes. Use plastic surgical tools to dissect and reveal plastic frog lungs, heart and other organs. Enough materials for three slimy dissections. Learn interesting facts about frogs in the instructions booklet. No sharp edges. Set includes molding material, plastic frog insides, measuring cup, mixing tools, plastic surgical tools, frog mold/operating table and detailed instructions. Ages 8 and up. (More)