My cousin is also in grade one. Later, he got used to it. As a parent, you can't worry about your child and you can't put too much pressure on him. My aunt is so demanding of my cousin that she enrolled him in many cram schools. After all, he is a seven-or eight-year-old child with limited acceptance. Take your time and don't worry too much. Give him a relaxed and enlightened learning environment and guide him patiently. Better be less angry. If you are a math student, you can buy another exercise book, but don't worry.