1.0-3 years old was enlightened by parents in an entertaining way.

2.4-6 years old can cultivate a more systematic mathematical thinking system. At this stage, children need to be screened according to their acceptance and matched with different progress and methods.

3. Logic dogs especially exercise children's logical thinking, especially in observation. They can choose a suitable one according to their age.

4. Hong En Math App is a math enlightenment App for children aged 3-8, which is divided into four stages: 3-5 years old, 4-6 years old, 5-7 years old and 6-8 years old, and each stage corresponds to different contents.