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新课程理念下的数学教学,是为学生的发展而开展。要使所有的学生都能获得发展,只有从学生的实际出发。因此,学生本身就是课堂教学的重要资源。案例描述学完面积的概念后,教师首先出示1平方分米的教具,学生找出学具,量一量边长。然后揭示概念:边长为1分米的正方形,面积是1平方分米。接着学生用手续触摸这个面,感受一下它的大小。再量一量,说一说它的面积,想一想生活中哪些物体表面的面积接近1平方分米?这时,教师启发:如果用1平方分
The new curriculum concept of mathematics teaching, is carried out for the development of students. To enable all students to develop, only from the students’ reality. Therefore, the students themselves are an important resource for classroom teaching. Case Description After learning the concept of area, the teacher first produced a 1-square-decilication teaching aids, students to identify the school, the amount of a side length. Then reveal the concept: side length of 1 meter square, the area is 1 square decimeter. Then students touch the surface with the formalities and feel its size. Again a quantity, to talk about its area, think about what the surface area of life close to 1 square decimeter? At this time, the teacher inspired: If you use 1 square