Mathematics content in Hong En can be divided into four courses according to the degree of difficulty: initiation course (3-5 years old), basic course (4-6 years old), advanced course (5-7 years old) and extended course (6-8 years old).

You can also click free mode to divide the content into four sections according to knowledge points: number and quantity, addition and subtraction calculation, geometry and space, and comprehensive thinking. There are four stages in course learning: playing, learning, practicing and taking exams, such as "1 and many". In the play stage, let the baby help the kitten catch fish on the screen, let the baby clearly understand the difference between a fish and a group of fish, and put abstract concepts.