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化学是一门以实验为基础的自然学科,如何利用化学实验更有效地培养学生实验探究能力、创新能力,让实验带活课堂,让实验激发学生学习兴趣?为此,笔者以注射器在初中化学实验教学中的应用为例,以课堂教学为契机,做了一些有益的探索和尝试。一、取样品师:用哪些仪器、方法可以收集教室里面的空气? 生:(讨论后)用集气瓶排水法,用保鲜袋(未开启的)直接收集空气法……师:还有其他方法吗?盛装薯片、蛋黄派的包装
Chemistry is a natural science based on experiment. How to use chemistry experiment to cultivate students ’experimental exploration ability and innovation ability more effectively, let the experiment take the live classroom and let the experiment stimulate students’ interest in learning? Therefore, I use the syringe in junior middle school chemistry The application of experimental teaching as an example, classroom teaching as an opportunity, do some useful exploration and try. First, take the sample division: What instruments, methods can collect the air inside the classroom? Health: (after discussion) with the gas collection tank drainage method, with fresh bags (unopened) direct collection of air law ... ... Teacher: There are other Method? Dress potato chips, pie packaging