Primary students have difficulty in learning difficult concepts. In fact, students have to see concrete things, handle real things at first. Gradually, they can learn more difficult things.
实际上，小学生在开始时要接触到实物，处理切实的问题，然后循序渐进，接触更加晦涩难懂的内容。
Primary students have difficulty in learning difficult concepts. In fact, students have to see concrete things, handle real things at first. Gradually, they can learn more difficult things.
实际上，小学生在开始时要接触到实物，处理切实的问题，然后循序渐进，接触更加晦涩难懂的内容。
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