“勤务兵” 课上需要的所有实验材料,小到一个小钉,除一部分需由学生自己去找寻,去挖掘外,教师还应事先考虑到教学内容、学生的年龄特点,亲自去准备一些必需的材料。如教《大气压力》课时,为使实验现象明显,激发学生 All the experimental materials needed in the “Service Soldier” class should be as small as a small nail. Apart from some of the experimental materials to be searched by the students themselves, the teachers should also consider the teaching contents and the age characteristics of the students in advance to prepare some necessary material. Such as teaching “atmospheric pressure” class, in order to make the experiment obvious, inspire students