著名教育家叶圣陶先生曾说:“学生通过预习,自己阅读课文,动了天君(大脑),得到理解,当讨论的时候,见到自己的理解与讨论的结果正相吻合,便有独创成功的快感;或者见到自己的理解与讨论结果不相吻合,就作比量短长的思索;并且预习的时候绝不会没有困惑,困惑而没法解决,到讨论的时候就集中了追求解决的注意 Mr. Ye Shengtao, a famous educator, once said: ”Students read their own texts and moved on to the heaven (the brain) to understand them. When they discussed it, they saw that their own understanding was in accordance with the results of the discussion. The thrill of success; or to see their own understanding and discussion of the results do not match, as a short amount of thinking; and preview time will not be confused, confused and unable to solve, to focus on the discussion of the pursuit Solved the attention