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课题:倍数和因数教材简介:《倍数和因数》这部分内容教学“倍数”和“因数”的认识,以及找一个数的倍数和因数的方法。借助正方形拼成长方形,建立图形与算式之间的联系。在交流活动中,引出倍数和因数,在讨论中初步感知倍数和因数的关系,从而为正确的理解概念提供了素材。在交流活动中,学会找一个数的倍数与因数,在探索活动中学会有序的找一个数的倍数与因数,并通过观察与交流活动发现一个数因数与倍数的特征。目标预设:
Questions: multiples and factors Teaching material Description: “multiples and factors” This part of the content teaching “multiples ” and “factor ” awareness, and to find a number of multiples and factors. Use squares to create rectangles to establish the connection between graphics and arithmetic. In the exchange activities, leading to multiples and factors, the initial perception in the discussion of the relationship between multiples and factors, thus providing a correct understanding of the concept of material. In the exchange activities, learn to find a multiple and the number of factors in the exploration activities will be ordered to find a multiple and factor of a number, and through observation and exchange activities found a number of factors and multiples of the characteristics. Target preset: