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1. Improve the teaching effect.1. Challenges and countermeasures of educational resourcesThird, the implementation challenges and coping strategies

1. Challenges and countermeasures of educational resourcesSecond, the advantage of controlling the class size to 15 peopleThis class size is also convenient to carry out inquiry learning. Every student has more opportunities to participate in discussions and experiments, and it is no longer a few students who dominate classroom interaction. In science class, 15 students can be divided into several groups to carry out experimental exploration, and each student can operate the instrument, observe the experimental phenomena and put forward his own opinions. This is helpful to improve students' scientific inquiry ability and innovative thinking ability.

I. Successful experiences of Europe, America, Japan and South KoreaSecond, the advantage of controlling the class size to 15 peopleThird, the implementation challenges and coping strategies