探索复习课教学主线设计 提高科学课堂的实效性

复习课是初中科学课堂的重要课型之一,是教师指导学生温习知识,强化知识,加深理解,使知识系统化并进行重新再建构的过程。然而,在课堂实践中,教师往往只注重知识点的简单回顾,而缺少对知识间联系的探究;只注重解几道题,而缺少方法的梳理;只注重知识本身,而缺少与实际生活的联系,使课堂显得沉闷,学生缺乏主动参与,也缺乏知识的灵活应用,导致复习效果不太理想,也无法促进学生的发展。有实效性的课堂一般都有较好的教学主线,有利于突出重点,把握内容和方法,让学生乐于参与。其中,基于问题解决、方法梳理、知识建构这三种方法是常见的主线构建模式,通过日常课堂观摩和教学实践,发现上述三种模式确实有利于提升课堂实效。

Exploration of the Reviewing Class Designs to Improve the Effectiveness of the Science Class

Reviewing class is one of the important lessons of junior high school science class,where teachers guide students to re-view knowledge,strengthen knowledge,deepen understanding,make knowledge systematic and re-constructed. However,in the prac-tice of teaching,teachers often focus on the simple review of knowledge points,only pay attention to the solution of some problems,and lack research on relationship among the knowledge. It makes the class boring,and students less participate and lack the flexible appli-cation of knowledge,which causes poor reviewing effect and does not help to promote students＆#39; development. Effective class generally has a better teaching main line for outstanding key-points,grasping the content and method,and letting the students participate. A-mong them,problem-based learning,method summarization,knowledge construction are the common models. Through daily class ob-servation and teaching practice,it is found that the three models are conducive to the improvement of class efficiency.