This is a math learning application, suitable for 5-7 years old children practice addition and subtraction between 0-20.
Version 1.0 provides the following features:
1.Count
2.Comparison size
3.Addition within 1~5
4.Subtraction within 1~5
5.Addition within 6 and 7
6.Subtraction within 6 and 7
7.Addition and subtraction with 8 and 9
8.Addition and subtraction with 10
9.Addition and subtraction with 11～20
10.Addition and subtraction with 20
11.Statistics（Unique learning history statistics function）