Addition and substraction math

It is an educational book that helps children to develop their mathematical knowledge.

It's got basic numbers printed in a big, clear way. These numbers are increasingly being arranged, creating a process of collection and subtraction that is of varying difficulty for children between the ages of 3 and 6.

come with :

Paperback ‏ : ‎ 140pages

Dimensions ‏ : ‎ 8.5 x 0.25 x 11 inches