The Number Board 1 to 100 (Number Square) is one of the common math learning tools.
Suitable for parents and teachers to teach children math.
Let your children learn the numbers 1-100 for identify, pronunciation.
You can also extend the multiples of 2, 3, 5,10, and odd, even, and digits.
It is one of the most versatile learning tools.
Provide Chinese and English versions to let children learn languages.