Useful. According to the relevant information of dolphin self-study, since the dolphin class, the children have been very active in answering questions in the school classroom, and the dolphin self-study app is still very effective. As a parent, he obviously felt that he was no longer opposed to learning this thing and playing it. Teaching students in accordance with their aptitude and individualized counseling are not only to improve their grades, but to cultivate comprehensive learning quality. This is the advantage of dolphin education.