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Title: Not a toy
Review: This is an amazing device. It's quite incredible--once you get it to work. My elven-year-old son had a delightful time putting it together, but there is a serious learning curve when it comes to making the device actually work. While an adult has the patience required to learn the technique, my preteen became board after several tries and gave up. Still, it makes for an effective demonstration of several scientific concepts--once you figure out how to make it work . . .
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