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一、旧知引入激发探究愿望师:同学们,谁能说一说分数与除法之间的关系?生:分数中的分子相当于除法中的被除数,分母相当于除法中的除数,分数线相当于除号。师:把下列分数先化成除法的形式,再算出它们的商。2448,3642,1362,84,21生:(在练习本上做)师:通过计算,你们发现了什么?生:
First, the old mind to stimulate the desire to instigate division: Students, who can talk about the relationship between scores and division Health: the numerator in the score is equivalent to the dividend in the division, the denominator corresponds to the divisor in the division, the score line is equivalent to divide number. Division: The following scores were first into the form of division, and then calculate their quotient. 2448,3642,1362,84,21 students: (in the exercise book to do) Division: by calculation, what did you discover? Students: