The Maths Pre Primer Book would be the best introduction to the number world of your child, as it would be the first approach to introducing him to the world of numbers. Basic mathematics is fundamental and has to be inculcated in a child at an early age of development. Here, a properly planned and kid-friendly maths book enters the scene, and the Maths Pre Primer Book does just that. https://doomelang.com/read-blog/134358