前段时间,我听了一节五年级的常识课,内容是《杠杆》。课堂上,学生的探究活动一个接着一个,场面十分热闹。教师努力体现“让学生自主探究”的理念。但学生在几个关键环节上的反应表明,这堂课上的探究活动并未取得预期的效果。 镜头一:课的导入部分。教师是用起钉锤起钉子导入的,这是一个变形杠杆的应用。当教师把话题转到用一根木棍来做实验说明刚才的问题时,很多学生却是一脸迷惘。 Some time ago, I heard a fifth-grade common sense class, the content is “leverage.” In class, the students’ inquiry activities one by one, the scene is very lively. Teachers strive to embody the concept of “allowing students to explore autonomously.” However, the reaction of the students at several key points showed that the inquiry activities in this lesson did not achieve the expected results. Lens one: the introduction part of the lesson. The teacher is using a nail hammer from the introduction of nails, which is a deformation lever application. When the teacher turned to the topic of experimenting with a stick to illustrate the problems just now, many students were confused.