Triangle Dominoes: Additions and Subtractions

With this original domino, the difficulty is greater than with traditional rectangular tiles, as the results that must match are arranged on 3 sides instead of 2. There is an addition operation, a subtraction operation and a result on each tile. Tiles made of sturdy veined cardboard with a self-correcting system. In fact, the correct association of all the tiles will be witnessed by the composition of a figure known to the children.

Dimensions: side 5 cm

Contents: 42 tiles to perform 2 different dominoes (result up to 10 and up to 20) with 2 levels of difficulty - Teacher's guide.