精讲精练是课堂培养自学能力的必要条件课堂教学中组织学生阅读,最突出的矛盾是教师的讲授时间必须相应减少,课堂教学形式必须作出新的转变,这需要在教学思想上明确教与学的关系.教是为了学生学,是教给学生怎样学,提高学生的学习本领——自学能力. 我经过一年的教改实验体会到,课堂教学中指导学生阅读与讲授的时间矛盾是可以解决的.解决这一矛盾的关键是精讲精练.从原来的讲全讲细、讲深讲透,一下子改为讲准讲精、画龙点睛,确实有一定的困难.开始是不放手、不放心,根子在于思想不解放.不相信学生的自学能力,不相信精讲能收到细讲所不能达到的教学效果.因此,对于学生经过阅读、议论已经解决的问题,依旧重讲一遍,不但不能实现精讲,反而花费了更多的教学时间.以后,通过深入分析教材,准确确定精讲内容,突出重点,解决难点,课堂教学就打开了新局面. “DNA分子的结构和复制”一课,内容复 Exquisite refinement is a necessary condition for the classroom to develop self-learning ability. The most prominent contradiction in the classroom teaching is that teachers’ teaching time must be reduced correspondingly, and the classroom teaching form must be changed in a new way. This requires that teaching and learning should be clearly defined Teaching is for students to learn is to teach students how to learn to improve the learning skills of students - self-learning ability.After a year of teaching reform experiments I realized that the classroom teaching guide students to read and teach time conflicts can be solved .To solve this contradiction, the key is to elaborate on the scouring .From the original talk about the details, speaks thoroughly, suddenly changed to the standardization, finishing touch, does have some difficulties .Do not let go, do not worry , The root lies in the emancipation of the mind.Do not believe that the students’ self-learning ability, do not believe that the preaching can receive detailed teachings can not be achieved.Therefore, for students to read, the discussion has been resolved, still re-talk, not only can not To achieve lectures, but spent more time teaching later, through in-depth analysis of teaching materials, accurately determine the precise content, highlight the key to solve the difficulties, classroom teaching hit Opened a new situation, “the structure and replication of DNA molecules,” a lesson, complex content