化学是一门以实验为基础的自然学科,因此,学好化学关键在于做好实验。实验成功与否,直接影响学生学习的效果,如果实验现象明显,将达到事半功倍的作用。但在实际的教学中,有些实验按教材去做现象不明显,很难达到目的。为此这就要求我们教师根据实际情况对一些实验进行改进创新,更好地为我们的教学服务。我对人教版九年级化学上册第七单元课题一探究活动中的灭火器进行了改进,下面我从制作材料及工具、制作方法、使 Chemistry is an experiment-based natural discipline, so the key to learning chemistry is to experiment. Successful experiment or not, a direct impact on the effectiveness of student learning, if the experimental phenomenon is obvious, will achieve a multiplier effect. However, in actual teaching, some experiments do not notice the phenomenon by teaching materials, it is difficult to achieve the goal. To this end, this requires us teachers based on the actual situation of some experiments to improve innovation, better service for our teaching. I made improvements to the fire extinguisher in the Quest for Research Activities of the Seventh PEP on the ninth grade of the People’s Education Press. From the production of materials and tools, I made