Therefore, it is suitable to introduce fractional parts to children as the part less than a unit of a continuous quantity. For this reason, standard amounts such as 1 m, 1 l, and 1 kg are used as unit quantities for dividing fractions, as shown in the example of Figure 1:
1/4 m is 1 m÷4, and 3/4 m is 1 m÷4×3, so this is a good way to help children understand fraction:
1/4=1÷4 , 3/4=1÷4×3