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一、圈圈点点,把握关键对于三年级学生来说,数学概念的理解与应用难度较大,因此,在概念教学时我要求学生“圈圈点点,把握关键”。如教学《面积与面积单位》时,我先让学生进行预习,对阅读中的不理解或有疑惑的地方进行圈点,学生在“物体的表面或封闭图形的大小叫面积”中圈点出了“表面”“封闭”“大小”三个词,教学便从阅读中的问题出发,分别从三个层次进行,一是让学生动手摸一摸书本、课桌、黑板、文具盒等物体的面,充分感知什么是物体的表面;二是让学生动手画一画如三角形、正方形、长方形等平面图形,
First, circle a little bit, grasp the key For the third graders, the understanding and application of mathematical concepts more difficult, therefore, in the concept of teaching, I asked students to “circle a little bit to grasp the key.” For example, when teaching “area and area units”, I first ask students to preview and circle readings that they do not understand or have doubts about, and students point out the “area of surface or enclosed area” “Surface ” “Closed ” “Size ” three words, teaching from the reading of the problem, respectively, from three levels, one is to allow students to touch books, desks, blackboard , Stationery boxes and other objects surface, fully aware of what is the surface of the object; second is to allow students to draw a picture, such as triangles, squares, rectangles and other graphic graphics,