在教学《杠杆》一课时,恰逢学校拆除旧平房,有很多大墙块、水泥预制板,是教杠杆很好的现成材料。当带领学生到现场时,嘴快的学生说:“我知道用杠子撬这些大墙块,这有什么新鲜的啊!”果然,虽上了这一课,但学生的探究杠杆原理的兴趣,没有被调动起来。 In the teaching “Leverage” lesson, it coincided with the school demolition of the old cottage, there are a lot of big wall blocks, cement prefabricated panels, is to teach the lever of good ready-made materials. When leading the students to the scene, the fast-talking student said, “I know what it's like to pry off these big blocks with a stick!” Sure enough, although this lesson was taken, students' interest in exploratory levering did not Be mobilized