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教学目标(1)掌握勾股定理的逆定理,会用它判定一个三角形是否是直角三角形;(2)会运用勾股定理的逆定理解决有关证明与计算的问题;(3)通过对勾股定理逆定理的证明的探究,体验、感悟知识的生成和发展过程,体会从特殊到一般的认识规律与数形结合的思想;(4)通过参与课堂活动,感受探索、合作学习的乐
Teaching Objective (1) Grasp the inverse theorem of the Pythagorean theorem and use it to determine whether a triangle is a right-angled triangle; (2) use the inverse theorem of the Pythagorean Theorem to solve the problem of proof and calculation; (3) (4) The idea of combining the cognitive law with the number-form from the special to the general; (4) The pleasure of exploring and learning cooperatively through participation in classroom activities