求翻译：以上的教学方法对教师有很高的要求，课前教师必须做好充分的准备，而且在准备过程中，教师必须多动脑，勤思考，所以备课的任务较传统教学要繁重些。不过，教师之间可以互相合作，充分利用资源，而且可让水平高的学生做帮手，这也是学生自我提高的一个好方法。是什么意思？

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More teaching methods for teachers have very high demands, teachers must be fully prepared before class, and in the process of preparing, teachers must use your brain, thinking, so the more onerous task of preparing a more traditional teaching. However, co-operation between teachers, making full use

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