4 to 8 years old. According to relevant data, the fifth five-year mathematics is suitable for children aged 4 to 8, and they learn better at the age of 4. Wuwugen Whole Brain Mathematics Moral Education System is an innovative solution for children's comprehensive quality education based on mathematics education, which was exclusively developed by Beijing Yu 'en International Education and Culture Co., Ltd. and applied for national patent protection. It is the most natural and scientific teaching method to perceive quantitative learning and calculation from the perspective of five and ten.