七年级学生对于去括号法则掌握情况及错误诊断研究  

Study of the seven grade students' mastery of the rules of the bracket and the error diagnosis

作　　者：王宽明[1] 严虹[1] 李俊扬[1] 

机构地区：[1]贵州师范大学数科学学院,贵州贵阳550001

出　　处：《贵州师范大学学报（自然科学版）》2017年第5期73-78,共6页Journal of Guizhou Normal University：Natural Sciences

摘　　要：研究目的主要是检查学生是否能够厘清去括号相关法则的概念,以便提升七年级学生对于括号概念的认知水平。运用调查法对七年级学生进行研究,根据学生认知水平及常见错误,与一些教师商讨后采用自编试卷检测学生在去括号问题中常见错误进行研究。研究发现:七年级学生对去括号法则整体情况掌握良好,但对层次较高的内容掌握相对较弱,且两极分化现象初显端倪;七年级学生在不同类型去括号问题解决过程中出现的错误根本原因是对法则掌握缺乏系统性;七年级学生使用去括号法则解决问题存在问题是缺乏信息甄别、整合和使用的能力。因此,教学中需要重视纸笔计算和"变式"教学。The main purpose of the study is to check whether the students can clarify the concept of relevant laws in order to enhance the parentheses,brackets for grade-seven students the concept of cognitive level.According to the students＇ cognitive level and common mistakes,we design the research in grade-seven students by using the survey method,design the self examination paper to students in parentheses problems of common mistakes in the study.The study reveals：seventh grade students generally have good command of bracket rules,but not include the higher content and appears polarization;the reason of problems caused in brackets results in the inadequate systematic awareness in different types;grade seven students are lack of information screening,integrate and use the ability to use bracket rule of problem solving problems.Therefore,need to pay attention to the computing and＂change type＂teaching.

关 键 词：七年级学生 去括号法则 认知错误 

分 类 号：G642[文化科学—高等教育学]