Magic Triangles are a great resource for early learners topractise addition and subtraction for numbers 1 to 10.Self-checking, wipe-clean and easy to use, kids can workthrough the cards with little to no supervision required. Simplycover a corner with your hand and either add or subtract thenumbers on the other two corners. The answer will always beunderneath your hand!0Includes:035 Double sided cards01 wipe- clean pen
