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1. European and American casesSecond, the advantage of controlling the class size to 15 people1. Improve the teaching effect.

In terms of educational concept, teachers also need to adapt to this change from large class teaching to small class teaching. Teacher training is particularly important. Schools can organize teachers to participate in training courses in small class teaching and learn the methods and skills of small class teaching, such as how to carry out personalized teaching and how to organize efficient group activities, so as to improve teachers' teaching ability to adapt to the new teaching mode.2. Japan and South Korea cases1. European and American cases

Second, the advantage of controlling the class size to 15 peopleSecond, the advantage of controlling the class size to 15 peopleIt is also more beneficial to the cultivation of students' artistic and sports specialties. Teachers can discover the potential of each student in painting, music and sports, and provide them with more opportunities for guidance and participation in related activities. For example, in music class, teachers can give each student more time to practice solo and improve their singing skills.