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教学内容:苏教版《义务教育教科书·数学》三年级上册第96~97页。教学目标:1.使学生进一步感受“1”和几分之一、几分之一和几分之一之间的联系,丰富、深化对几分之一的认识。2.使学生在抛正方体选择分数、根据分数选择“分数条”、根据需要将“分数条”进行等量替换等活动过程中,初步感受事件发生的随机性,学会用不同的方法进行替换,逐步增强对分数大小的感悟,锻炼
Teaching content: The Soviet version of “compulsory education textbook · Mathematics” third grade on the first 96 ~ 97 pages. Teaching Objectives: 1. To enable students to further experience the relationship between “1” and a fraction, a fraction, and a fraction to enrich and deepen their understanding of a few percent. 2. To make students choose the fraction of throwing cube, according to the score to select “score”, according to the need to “score” to replace the equal amount of other activities in the process, the initial impression of the randomness of events, learn to use different Method to replace, and gradually enhance the sentiment score, exercise