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教材分析:教学面积计算时,不仅教会学生面积计算的方法,更重要的是通过教学培养学生的能力。一是培养学生动手操作的能力,通过数方格,图形割补、拼、摆等一系列的操作,发展学生的空间观念。二是培养学生转化矛盾,探索规律的能力。教学中,要启发学生设法把所研究的图形转化成已会计算的图形,还要引导学生主动探索所研究的图形与已学过的图形之间的联系,从而找到计算方法。教学目标:1.使学生通过剪拼、平移、旋转等方
Teaching material analysis: Teaching area calculation, not only the method of teaching the area of students, but more importantly, through teaching to develop students’ abilities. First, develop students ’abilities of hands-on operation, and develop students’ space concept through a series of operations such as checkered, graphic cut-off, fight, pendulum and so on. The second is to train students to transform their contradictions and explore the law’s ability. Teaching, to inspire students to try to study the graphics into calculated graphics, but also guide students to take the initiative to explore the relationship between the studied graphics and graphics have been learned to find the calculation method. Teaching Objectives: 1. To enable students to cut through spelling, translation, rotation and other parties