Write-On-Wipe-Off Fact Family Triangle Mats: Addition, Set of 10

Each mat features an addition fact family triangle on one side and a number bond on the other. Set of 10. Mats are 9" x 12", made of durable flexible plastic. For use with dry-erase markers (sold separately).Key Features : i : Versatile tool to help students learn addition, number relationships and decomposing numbersii : High quality durable write & wipe matsiii : Great visual tool to learn additioniv : Mats are 9" x 12"