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前段时间,有幸听了一节北师大版小学四年级数学“角的度量”一课,感觉很有思想,很有创造力,执教教师能够以“学生的发展这条线”为中心实施教学,教学效果非常高效。我想把我的一些收获与同行们交流,敬请指正。教学片断:(一)体会量角的必要性围绕“角的大小指的是什么?”这个问题,请学生说一说,并指一指。让学生明确了角的大小的概念。以“人们发明创造量角器之前,是用什么来表示角的大小的呢?”启发学生思考。然后教师启发学生
Some time ago, I was fortunate to have heard a section of the fourth grade primary school mathematics “angle measurement” a lesson, I feel very thought, very creative, coaching teachers to “student development this line As the center of teaching, teaching effectiveness is very efficient. I want to exchange some of my harvest with my colleagues, please correct me. Teaching pieces: (A) the need to understand the angle Around ”what is the size of the angle?“ This question, please tell the students, and refers to one. Have students clarify the concept of corner size. To ”people invented protractor before, what is the size of the angle? " Inspire students to think. Then teachers inspire students