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教学内容:苏教版《义务教育课程标准实验教科书·数学》二年级下册第64~66页。教学目标:1.让学生经历由实物上的角抽象为几何图形的过程,通过观察、实物操作认识角,知道角的各部分名称。2.知道角有大小,初步感受角的大小和两条边叉开的程度有关,能够比较出角的大小,会直观的比较角的大小。3.让学生感受到生活中处处有角,体验数学与生活的紧密联系。4.建立角的正确表象,进一步发展学生的空间观念和形象思维,积累认识图形的经验,增强动手操作的能力。
Teaching content: The Soviet version of “compulsory education curriculum standard experimental textbook · Mathematics” second grade volumes of the next 64 ~ 66 pages. Teaching Objectives: 1. Let the students experience from the physical angle of the abstract geometric process, through observation, physical operation of knowledge of the angle, to know the name of each part of the angle. 2. Know the size of the corner, the angle of the initial impression of the size of the two sides of the fork and the degree of separation, can compare the size of the angle, the angle will be more intuitive comparison of the size. 3. Let the students feel every corner of life, experience the close connection between mathematics and life. 4. To establish the correct appearance of the corner, to further develop the students’ space concept and thinking of the image, the accumulation of experience of understanding graphics, and enhance the ability of hands-on operation.