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【教学内容】苏教版三年级上册P29～32。【教材简析】本课结合现实情境,让学生运用生活经验,并通过动手操作认识质量单位——千克,初步建立千克的质量观念。教材精心设计了教学线索:首先是比轻重,学生很自然地由生活经验出发想到“掂一掂”和“称一称”的方法;由“称一称”引发对生活中常见的秤的认识;由“秤的认识”产生认识常见质量单位,称量物体质量的心理需求。教材通过“想想做
Teaching content] Sujiao version of the third grade P29 ~ 32. 【Teaching Materials Analysis】 This course combines the real situation, so that students use life experience, and through the hands-on understanding of the quality unit - kg, the initial establishment of the quality concept of kilograms. Teaching materials carefully designed teaching clues: first of all, than the severity of the students naturally from the experience of life think of ”掂 a 掂 “ and ”claiming that “ method; by Common in the scale of awareness; by the ”scale of recognition “ to produce common quality units, weighing the psychological needs of the object quality. Textbook through ”Think about doing