These Rekenrek or Math rack number posters from 1 to 10 will help students see the 5 structure in numbers from one to ten. They will also help with learning the numbers, making tens, doubles, addition and subtraction. Can be used as flash cards, to place on your bulletin boards or math word wall. This supports student numeracy skills in grade K 1 and 2. It develops number relationships, a key to support the new math curriculum.