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This interactive Flash version of the familiar Concentration game ("pelmanism" in the UK) helps a single user practice multiplication facts while developing memory and concentration skills. The player can choose an array of 16, 20, or 24 cards, which appear face down. The goal is to flip two cards at a time to match all the pairs of factors with their products as efficiently as possible. A scoring feature discourages random guessing. Users can choose to work with factors in three ranges: 2x-10x, 2x-21x, or 11x-21x. Printable versions of the game cards are available to download.
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