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教学内容:北师大版数学三年级下册第49—50页。学习目标:1.结合具体实例,理解面积的含义。2.经历比较图形面积大小的过程,探索比较图形面积大小的方法,积累比较图形面积的直接经验。3.在探究活动中培养直观估测能力、动手操作能力以及合作交流能力。教学重点:结合实例理解面积的含义,发展学生的空间观念。教学难点:探索比较图形面积大小的方法,体验比较策略的多样性。教学过程:
Teaching content: Beijing Normal University version of mathematics third grade volume 49-50 pages. Learning objectives: 1. Combination of specific examples, understand the meaning of the area. 2 through the process of comparing the size of the graphics area, to explore ways to compare the size of graphics area, the accumulation of direct experience comparing graphics area. 3. In the exploration activities to develop intuitive assessment ability, hands-on ability and ability to communicate. Teaching focus: combining examples to understand the meaning of area, the development of students’ space concept. Difficulties in Teaching: Explore ways to compare the size of graphics and experience the diversity of comparison strategies. Teaching process: