一、针对学生概念不清出现的错误的讲评在物理概念教学中,教师通过多种方法和手段精心引入并形成概念后,如何使学生加深理解,并最终掌握它,是突破物理概念教学这一难点的关键所在.而通过设置一些易错易混题,使学生尝试错误后,教师再点评,指出学生错误所在,带领学生走出思维误区,可使学生恍然大悟,从而加深对物理概念的理解.例1:一个质量为5千克的合金球,其中铅 I. Misconceptions about students’ unclear concepts In the teaching of physical concepts, after teachers have carefully introduced and formed concepts through various methods and means, how to make students deepen their understanding and eventually master it is to break through the teaching of physical concepts. Difficulty lies in the key point. By setting up some error-prone and easy-mixed questions, after the students try to make mistakes, the teacher will comment again, point out where the students are wrong, lead the students out of the mistaken ideas, and make the students come to an understanding, so as to deepen the understanding of the physical concepts. 1: An alloy ball with a mass of 5 kg, including lead