初中科学有许多实验现象实验者本人能够看清,但位置稍远的学生就不容易观察到。还有一些实验,由于测量工具、反应时间等原因,即使是实验者本人也无法准确判定或测量。对此教师应想方设法将实验所产生的现象、效果放大,以促进学生深入探究、揭示规律。放大法在初中科学实验中有着广泛的应用。 There are many experimental phenomena in junior high school science experiments I can see, but the location of students is not easy to observe. There are still some experiments, due to measurement tools, reaction time and other reasons, even the experimenter himself can not accurately determine or measure. In this regard, teachers should find ways to amplify the phenomena and effects produced by the experiment so as to promote students’ in-depth exploration and revealing the law. Magnification has a wide range of applications in junior high school science experiments.