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 | The Hundred-Grand Grand The Yamaha AvantÂGrand digital piano packs a concert piano experience into an upright's size and price |  |  | HANDS ON If You Build It, Santa Will Come Kits for building musical pencils, Theremins, crystal radios, and shortwave radios with your kids | |||||
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 | A New Spin on An Old Toy The humble yo-yo gets a high-tech makeover |  |  | HANDS ON Dam It! A new science kit brings hydropower to the playroom | |||||
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 | Robogolf You don't have to putt like Tiger Woods to practice like him |  |  |  |  | ||||
WEB-ONLY REVIEWS Â | |||||||||
 | MUSIC Catch Scratch Fever Digital DJs no longer lug dozens of vinyl discs to their gigs. Plus: How to get started DJing |  |  | BOOKS T-Minus: The Race to the Moon A behind-the-scenes look at the engineers and scientists who made the U.S./USSR space race happen | |||||
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