一、教材分析 本课是上海市《自然常识》教材中二年级的一个教学内容,是学生第一次正式接触并系统学习有关工具的知识。纵观整套《自然常识》教材不难发现,虽然本课是第一课也是谁一专门集中介绍工具的,但在其它年级的许多课中穿插了个别工具的教学内容,如:三年级的《磁性》一课中教学生认识、使用并制作指南针;同样是三年级的课《弹性》,则是教学生认识、正确使用并自制弹簧秤;还有四年级的加热与传热一课中教学生认识并正确使用酒精 First, the textbook analysis This lesson is Shanghai “natural common sense” teaching materials in the second grade of a teaching content, is the first official contact with students and systematically learn about the tools of knowledge. Although it is not difficult to find out that this lesson is the first and the one who specializes in introducing tools, the teaching contents of individual tools are interspersed in many classes of other grades, such as the third grade “ Magnetic ”class to teach students to understand, use and make compass; the same is the third grade of the class“ flexibility ”, is to teach students to recognize, correct use and self-made spring balance; there is a fourth grade heating and heat transfer class teaching students Know and use alcohol properly