Rubik's cubes have been around for awhile. The blocks been around the center so you can solve the puzzle. Why do you think Rubik's cubes are so popular?
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Why do you think Rubik's cubes are so popular?
SmartyPants Science
Welcome to the SmartyPants Science Channel where kids explore science concepts in fun, inquiry-based ways. This channel is run by Lynette Dickerson, a veteran teacher from South Carolina, and her son, Harper.