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教学内容:苏教版义务教育课程标准实验教科书——数学五年级(下册)第88～89页。教学目标:(1)使学生学会运用“倒过来推想”的策略寻找解决问题的思路,并能根据问题的具体情况确定合理的解题步骤;(2)使学生在对解决实际问题过程的不断反思中,感受“倒过来推想”的策略对于解决特定问题的价值,进一步发展分析、综合和进行简单推理的能力;(3)使学生进一步积累解决问题的经验,增强解决问题的策略意识,获得解决问题的成功体验,提高学好数学的信心。教学过程:
Teaching content: Jiangsu Education Edition compulsory education curriculum standard experimental textbook - fifth grade mathematics (second volume) 88 ~ 89 pages. Teaching objectives: (1) to enable students to learn to use “reverse to guess ” strategy to find ideas to solve the problem, and according to the specific circumstances of the problem to determine a reasonable solution steps; (2) to enable students to solve practical problems (3) to enable students to accumulate more experience in problem solving and to enhance their ability to solve problems; and (3) to make students’ ability to analyze, synthesize and carry out simple reasoning; Strategic awareness, access to solve the problem of successful experience, improve the confidence of learning mathematics. Teaching process: