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Electrify math learning with two-sided Hot dots cards and the Hot Dots Power Pen (sold separately). Each card features an equation with possible solutions. Children respond by pressing the Power Pen to a hot or cold answer dot, correct answers are rewarded with lights and sounds, or a 'Boing" for incorrect ones. Can also be used as conventional flash cards without the Hot Dots Power Pen. Each set of 3 1/2" x 5" quick-sorting cards is packaged in a sturdy reusable plastic box. 50 cards per set. Facts 0-9.
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