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要学好《有余数的除法》,必须熟记乘法口诀。教学前,拿出一定时间要学生背口诀很有必要。不但要会“按顺序背”,“任意指定背”,还要会“固定数字拐弯背”。比方见到“3”,要能背出一三、二三、三三、三四,……等口诀。“拐弯背”对学习有余数的除法很有作用,应使学生人人熟练。另外,还可安排点填空习题,如()×5<16、6×()<41等,这是过渡到有余数除法法
To learn good “division of the remainder,” you must memorize multiplication formulas. Before teaching, take some time to students back formula is necessary. Not only will “back in order”, “arbitrarily designated back”, but also “fixed numbers turning”. For example, to see “3”, to be able to back one, two, three, three four, ...... and other formulas. “Turning Bends” has a significant effect on the division of learning residuals, which should make the students proficient. In addition, you can also arrange point filling exercises, such as () × 5 <16,6 × () <41, which is the transition to a division method