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探索并掌握平行四边形的面积公式,并能应用公式解决简单的实际问题。引领学生经历和体验用“剪拼法”探究平行四边形的面积的过程,感受“等积变形”的思想方法,体会转化思想的价值。培养学生应用已有知识解决新问题的能力,发展学生的空间观念和初步的推理能力。
Explore and grasp the area formula of the parallelogram, and can use formulas to solve simple practical problems. Lead the students to experience and experience the process of exploring the area of the parallelogram by using the method of “cutting spell” and experience the thinking method of “equal deformation”, and realize the value of transforming thought. Develop students ’abilities to apply existing knowledge to solve new problems and develop students’ space concept and initial reasoning ability.