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教学内容:人教版《义务教育课程标准实验教科书·数学》三年级下册第59页例2及相关练习。教学目标:1.结合具体情境让学生经历两位数乘两位数的估算过程,培养学生的估算意识,初步理解估算方法。2.引导学生主动探索估算算理,解释估算过程,培养学生的数感,提高学生的比较推理能力。3.培养学生学习数学的兴趣,感受数学与生活的紧密联系。教学重点:掌握两位数乘两位数的估算方法,培养估算意识。
Teaching content: PEP “compulsory education curriculum standard experimental textbook” mathematics "third grade volume on page 59 Case 2 and related exercises. Teaching Objectives: 1. Combination of specific situations for students to experience double-digit by two-digit estimation process, training students to develop a sense of consciousness, a preliminary understanding of the estimation method. 2. Guide students to take the initiative to explore the estimation of the calculation, interpretation of the estimation process, to develop a sense of the number of students to improve students’ ability to compare reasoning. 3. Cultivate students’ interest in learning mathematics and experience the close connection between mathematics and life. Teaching focus: master the double-digit by double-digit estimation method, training estimate consciousness.