自然是一门以实验为基础的学科 ,如何指导学生通过实验活动有效地获得知识和锻炼能力 ,本文以《物体的热胀冷缩 (一 )》一课的教学为例谈谈自己的做法。ａ .巧设悬念 ,激发学生自行探求知识的兴趣。良好的开端是成功的一半 ,美国当代著名教育心理学家布鲁纳在《教育过程》一书 Nature is an experiment-based discipline, how to guide students to effectively acquire knowledge and exercise ability through experimental activities, this article to talk about their own practice of “object thermal expansion and contraction (a)” class teaching as an example. a. Set up suspense to stimulate students' interest in seeking knowledge on their own. A good beginning is half the success, the famous contemporary American educational psychologist Bruner in the “education process” a book