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“复名数和小数”是四省市编六年制《小学数学》教材第八册第四单元的教学内容。这部分教材的教学是在学生熟练掌握“小数点移动引起小数大小的变化”和分散在《小学数学》1—8册教材中长度、重量、货币、时间等计量单位及进率的基础上进行的。在这个单元的教学中,使学生正确理解和掌握复名数与小数相互改写的方法是教学的重点。由于学生在日常生活中对于计量单位的知识接触较少,缺乏实践,又由于各种
The “multiple names and decimals” is the teaching content of the fourth unit of the eighth book of elementary mathematics textbooks compiled by the four provinces and municipalities for six years. This part of the teaching of teaching is based on the students master the “decimal point shift caused by changes in the size of the decimal” and dispersed in “Primary Mathematics” 1-8 volumes of textbook length, weight, currency, time and other units of measurement and rate of progress based on . In this unit of teaching, to enable students to correctly understand and master the complex number and decimal rewriting method is the focus of teaching. Due to students in their daily lives less knowledge of the unit of measurement, lack of practice, but also due to various