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为了促使学生熟练地掌握计算方法,形成计算技能,提高计算能力,加强练习是十分必要的。那么,如何练习才最有效呢?我认为应讲究“五练”:一、围绕重点与难点练集中力量组织突出重点与突破难点的练习,有利于沟通知识间的联系,促进学生形成良好的认知结构。例如,在小数除法中,根据除数的小数位数“移位”和给商的小数点“定位”,是教学中的重点和难点,可以组织有针对性的单项练习,压缩非重点的计算环节和过程。
In order to encourage students to master the calculation method skillfully, form the calculation skill, improve the calculation ability, strengthen the practice is very necessary. So, how to practice it is the most effective? I think we should pay attention to “five training”: First, focus on the key and difficult to focus on the strength of the organization focus and breakthrough difficult practice is conducive to communication between the knowledge and promote students to form a good recognition Known structure. For example, in fractional division, the “shift” of the decimal places based on the divisor and the “location” of the decimal point of the quotient are the key points and difficulties in teaching. You can organize targeted individual exercises to compress noncritical computing steps and process.