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缘起在一次学校组织的“点课教研活动”中,两位教师分别执教了北师大版四年级下册第五单元小数除法的第一课时“精打细算”。两位教师都从“买牛奶”入手,让学生引发算一算的必要性;在教学用竖式计算时,通过让学生说一说怎么做,引出竖式,并强调小数点对齐;最后完成3题列竖式计算。课后,我们对学生作业进行跟踪,结果有大部分的学生算错。是什么原因造成了学生对小数除法的学习困难呢?
Origin in a school organization “teaching and research activities ”, the two teachers coached the first division of the fifth unit decimal division of the fourth grade of the second edition of the “Beijing Normal University edition” “careful planning.” The two teachers all started with “buying milk ”, giving students the impetus to make a difference; in teaching vertical calculation, by letting the students talk about how to do it, leading to erection and highlighting the decimal point alignment; finally Complete 3 title vertical calculation. After class, we track student assignments and as a result, most of our students are wrong. What caused the students learning difficulties in the decimal division?