1 设计思想体现新课程理念,通过探索性实验教学的组织和实施,让学生身临其境,以科学研究者的身份,采用“问题—猜想—验证”的方法,主动探索、发现和获取知识,从而激发学生的求知兴趣,培养学生的创造能力。本课教学设计的主线为:提出问题——科学猜想——实验探索——发现新问题——实验探究——总结规律——实际应用。结合本节课的实验特点,实验方法的教育主要围绕以下几方面进行:①根据猜想确定实 1 The design idea embodies the concept of the new curriculum. Through the organization and implementation of exploratory experimental teaching, students are immersed in the environment. As a scientific researcher, they adopt the “problem-guess-verification” method to actively explore, discover and acquire knowledge. In order to stimulate students’ interest in learning and cultivate students’ creative abilities. The main lines of instructional design in this course are: Asking Questions - Scientific Conjecture - Experimental Exploration - Discovering New Questions - Experimental Exploration - Summarizing Law - Practical Applications. In conjunction with the experimental characteristics of this lesson, the education of experimental methods will focus on the following aspects: 1