Write-On/Wipe-Off Addition/Subtraction Fact Family Triangle Mats by Didax

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SKU: DDX-211763


Double-sided mats feature a fact family triangle on one side and a triangle diagram on the other, so students and teachers can fill in the 3 digits to practice addition/subtraction skills. For use with dry erase markers, the 9x12" mats are made of durable, flexible plastic. 10 mats per package. Grades 1-3.

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