在多年教学实践中,笔者发现绝大多数中学生对化学兴趣很浓,但这些只是浅层次的感知兴趣和操作兴趣,并不能真正进行探究性思考,再加上教材中普遍都是验证性实验,这让他们感到做实验枯燥乏味。因此,教师有必要对实验教学进行改进,以激发学生探究实验的兴趣。笔者结合多年的教学实践,对初中化学教材中的4个实验进行了改进和补充。一、改进仪器关于义务教育教科书(2012版)化学下册“溶解时的吸热或放热现象”研究,教材主要给出以下仪器:试管、烧杯、玻璃棒、温度计。笔者在让学生做实 In many years of teaching practice, I found that most of the high school students are very interested in chemistry, but these are only a shallow level of perceived interest and operational interest, and can not really engage in exploratory thinking, coupled with the textbooks are generally confirmatory experiments , Which makes them feel experimenting dull. Therefore, teachers need to improve the experimental teaching to stimulate students to explore the interest of the experiment. The author combines years of teaching practice, the junior high school chemistry textbooks in the 4 experiments were improved and supplemented. First, to improve the instrument on compulsory education textbook (2012 version) Chemistry Book “endothermic or exothermic phenomenon of dissolution ”, the textbook mainly gives the following instruments: test tube, beaker, glass rod, thermometer. I let students make it real