1 grade and 1 grade children's main goal in learning mathematics is to master basic calculation skills, such as addition and subtraction within 20. The focus of learning at this stage is to establish good study habits and lay a good foundation, rather than pursuing difficulty or speed.

2. Children in Grade One usually don't have the ability and skills needed to learn Olympic Mathematics. Olympic math problems usually require high thinking ability and problem-solving skills, which is still difficult for first-year children.

3. The children in grade one need to gradually establish self-confidence in learning and develop the habit of independent thinking. Letting children get in touch with math problems such as the Olympics too early will make them feel confused and frustrated, and even affect their confidence and interest in math learning.