“物体的热膨胀”是热学的重点知识,在这个课题的教学中,如何增添实验色彩、强化课堂情趣,使学生神融意扬、始终处在积极思维和探索之中?我的做法如下。 1 创设情境,导入课题上课时,教师放出三幅彩色投影片,然后让学生带着教师提出的问题进行思考。 (1)如图1听示,乒 “The thermal expansion of objects” is the key knowledge of thermal science. In the teaching of this subject, how to add experimental colors and strengthen the interest in the classroom so that the students are full of ideas and are always in active thinking and exploration? My approach is as follows. 1 When creating a situation and importing a class, the teacher releases three color slides, and then asks the students to reflect on the questions raised by the teacher. (1) As shown in Figure 1, Ping