According to the difficulty, I recommend swimming and painting first, then roller skating and piano, and finally dancing and Go or calligraphy. Children's concentration is limited, just choose a combination. No matter what kind of interest classes children attend, they need the support and guidance of their parents. Interest classes mainly cultivate children's interests, and children's hobbies come from parents' encouragement to their children. It is best to choose an interest class that children like and are easy to get results.