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教学内容:“1亿有多大”是义务教育课程标准实验教科书人教版数学四年级上册的教学内容,是在学生认识了亿以内和亿以上数的基础上进行教学的综合应用课。由于1亿这个数太大,学生很难获得直观感受。教材安排这个综合应用,旨在使学生通过探究活动,充分感受1亿这个数有多大。教学目标:学生通过对具体数量的感知和体验,理解数的意义,建立数感;通过探索活动,初步获得解决问题的一些策略和方法,发展解决问题的能力;体验数学
Teaching content: “100 million how much ” is compulsory education curriculum standard experimental textbook PEP mathematics fourth grade on the content of the book, is to understand the students within the million and more than 100 million on the basis of the teaching of integrated application class. Due to the large number of 100 million students difficult to obtain intuitive experience. The textbook is a comprehensive application designed to enable students to fully understand the magnitude of 100 million through inquiry activities. Teaching objectives: Students through the specific number of perception and experience, to understand the significance of the number, the establishment of sense of number; through exploration activities, preliminary access to some strategies and methods to solve the problem, the development of problem-solving skills; experience mathematics