When chidren are begining to study counting,you can give him the watch specially made for calculating.With such a watch, your chidren can do arithmetic any time to increase his interest to arithmetic.

• 您在孩子开始学习数数时，就可以用一个这样的数学手表给他，戴在手上时可以做加减乘除的游戏，提高他对学习数字基本运算的兴趣。