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1.感动.八年前,彭念东老师在《中小学数学》2005年9期撰文《一道中考题引发的争议》(以下简称文1)讲述了这样的故事:2005年青岛中考填空题:“如图1,E、F是(?)ABCD的对角线BD上的两点,请你添加一个适当的条件:____,使四边形AECF是平行四边形.”对于这样一道常见的条件开放型题目,大部分学生填的是BE=DF,或∠BAE=∠CDF等常规性答案,个别学生填的却是非常规性答案∠EAF=∠ECF.对于个别学生的“另类”答案,大多数阅卷老师认为是错的.他们的潜意识里,填这种答案的学生,数学成绩肯定很差.文1作者却认为“另类”答案有可能
Eight years ago, Peng Nian-dong teacher in “Primary and Secondary Mathematics” in 2005 nine article “a controversy caused by the examination questions” (hereinafter referred to as 1) tells the story: 2005 Qingdao fill in the blank exam: “ As shown in Figure 1, E and F are two points on the diagonal BD of (?) ABCD. Please add an appropriate condition: ____ to make the quadrilateral AECF parallelogram. ”For such a common open-ended problem , Most of the students fill in regular answers such as BE = DF, or ∠BAE = ∠CDF, and some students fill in with non-routine answers ∠EAF = ∠ECF. For the “alternative” answers of individual students, most Marking teachers think it is wrong.They subconsciously, fill in the answer to the students, mathematics results must be very poor.An article authors believe that “alternative ” the answer is possible