Dominoes are a versatile resource to introduce and reinforce key mathematical concepts. These double six dominoes are colour-coded and come in a set of 168 pieces. Supplied in a reusable jar. The dominoes come in 6 different colours (28 of each colour). Each domino measures 4.5 cm x 2.2 cm. Use dominoes as matching game, but are just as useful to introduce the concept of probability, by using them to measure chance. Or use them for place value activities to reinforce multiple digit numbers. Students can practice with the relation between dots on the domino as well as the number word, and learn to count.