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公开课上,一切都正常进行着。执教的是余老师,一位年轻帅气的男教师,课也上得潇洒自如。这堂课是学习《什么是周长》。为了强化学生对周长的性质之一——封闭图形才有周长的认识。余老师即兴拿下架在鼻子上的眼镜,将眼镜腿分开,问学生:“这个眼镜有周长吗?”孩子们齐声说:“没有,因为它没有围起来。”只见余老师随手将眼镜腿儿靠在一起合拢,再问学生:“这下有周长吗?”
Open class, everything is normal. Coaching is Yu teacher, a young and handsome male teacher, the class was on the ease and ease. This lesson is to learn “what is the perimeter.” In order to strengthen one of the nature of students on the perimeter - the closed-end graphics have perimeter knowledge. Yu teachers improvise to take off the glasses on the nose, the glasses legs apart, ask the students: “The glasses are perimeter it? ” The children said in unison: “No, because it is not enclosed. ” See more than teacher Yu readily pull glasses together close together, and ask students: “This is under it?”