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在物理课堂教学中,“向45分钟要质量”是我们努力的目标.为了达到这个目标,可采用多种教学方法、手段.本文简略谈谈有关分层次教学的问题.这里所说的层次,包括以下几个方面:一是45分钟时间的层次,二是课文内容的层次,三是学生知识水准的层次.如何利用45分钟在一个教室里,面对数十个学生,设计出一种最佳的教学方案,寻找出教与学的最佳交汇点,以便让绝大多数学生在不同的程度上获得最大的收益.按教学一般常规,课堂上起始的3～5分钟用来复习提问.其目的是复习旧课,同时应激起学生对新知识的求知欲.在不突破时间的前提下,要求设置的问题有价值.我认为第一个问题应涉及旧课中最基本的知识,即有关概念或原理、定律.此题应选中等以下水平的学生回答,我在实践中的做法是把所提问题说清楚并让学生思考后要求学生快速抢答,营造出一种“临战气氛”.最后一个问题应是用旧知识回答不了或是回答不全的问题,此题应选中等以上的学生回答,让他们感到知识的不足,并由此激发出为什么、怎样办的悬念,从而自然地导入新课.
In physics classroom teaching, “Quality to 45 minutes” is the goal of our efforts. In order to achieve this goal, we can use a variety of teaching methods and means. This article briefly talks about the issues of hierarchical teaching. The level mentioned here, Including the following aspects: First, the level of 45 minutes, the second is the level of the content of the text, the third is the level of student knowledge level. How to use 45 minutes in a classroom, facing dozens of students, design the most The best teaching program is to find out the best meeting point for teaching and learning so that the vast majority of students can get the maximum benefit at different levels. According to the general teaching principles, the first 3 to 5 minutes in the class is used to review questions. The purpose is to review the old lesson, and at the same time to stress students’ curiosity for new knowledge. Without breaking the time, the questions required to be set are valuable. I think that the first question should involve the basic knowledge of the old lesson. , that is related to the concept or principle, the law. This question should be selected such as the following level of students to answer, my practice is to clarify the issues raised and ask students to think quickly after the students are asked to answer, create a "pro battle The last question should be the question that cannot be answered or answered incompletely with old knowledge. This question should be selected by more than one student, so that they feel the lack of knowledge and inspire the suspense of why and how to do it. Import new lessons.