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前不久,我校有位青年教师教学《解决问题的策略》这节课,教材第89页“练一练”有道习题:“小军收集了一些画片,他拿出画片的一半还多1张送给小明,自己还剩25张。小军原来有多少张画片?”教师围绕本节课的教学重点提出要求:“先用自己喜欢的方法整理信息再解答。”随后的交流反馈,学生中出现了25×2+1=51和(25+1)×2=52这两种解答方法,并且出现错误方法“25×2+1=51”的比例很高。针对这位教师
Not long ago, a young teacher in our school teaching “problem-solving strategies” this lesson, textbook page 89 “practicing a practice,” a practical exercise: “Army collected some pictures, he took out half of the picture More than one for Xiao Ming, himself left 25. Xiaojun original how many pictures? ”Teachers focus on the teaching focus of this lesson put forward requirements: “ first use your favorite method of finishing information and then answer. ” Subsequent exchange of feedback, the students appeared two kinds of answer methods of 25 × 2 + 1 = 51 and (25 + 1) × 2 = 52, and the error method is “25 × 2 + 1 = 51” high. For this teacher