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用“二分法”求方程的近似解,学生可以从中体会函数与方程之间的联系,同时具备恰当地使用信息技术工具解决这一问题的能力.本教学案设计了4个实际活动,一环扣一环,让学生身临其境,合作交流,帮助学生发现规律,解决问题,同时让学生学会独立地将课本上的知识进行分析综合,整理归纳,自我诊断,通过解题巩固知识,最终形成一个完整的科学体系,从而优化学生的认知结构,培养创新能力.
Using “dichotomy” to find the approximate solution of the equation, students can understand the connection between the function and the equation, and have the ability to properly use information technology tools to solve the problem.This teaching case has designed four practical activities, A link deduction, so that students immersive, cooperation and exchange, to help students find the law and solve problems, at the same time allow students to learn the knowledge of the textbook independent analysis, collate, self-diagnosis, knowledge through the solution to consolidate , Eventually forming a complete scientific system, so as to optimize the students’ cognitive structure and cultivate innovative ability.