Start with a deck of cards. Before the trick, sneak a peek at the 10th card in the deck. Memorize it. Ask your volunteer to add the first and second digit of their number together. For instance, if he ...

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Hoping to help your fifth-grader with math skills? Here are some basic tips that experts suggest for fifth-graders. As the math they’re learning becomes more complicated and less obviously connected ...

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Flipping through a deck of cards in the library as her friends and classmates slough through books and papers means that, sometimes, people want answers from Carolyn Chen. "I usually have to reassure ...