1-2-3 Oy

1-2-3-OY! dramatically improves fast mental arithmetic, quickly builds confidence and encourages teamwork. Teachers, parents and students, remedial to advanced, here and abroad love this unique collection of ten dynamic math card games. The flexible rules and optional use of addition, subtraction, multiplication and division will challenge the best of the best and help the most math phobic. Each game is presented with numerous variations which are easily adapted to player's abilities.

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