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一、设计说明1.教学目标(1)知识与技能目标:正确理解正切函数的概念,会用正切概念计算或解题;(2)过程与方法目标:经历操作、探究、思考等过程理解正切概念并感受数形结合的数学思想方法,提高学生运用数学知识解决问题的能力;(3)情感态度与价值观目标:在解决问题的过程中,培养学生多角度思考问题和提出问题的能力,在探究问题的过程中,培养学生合作探究意识.2.重难点分析
First, the design description 1. Teaching objectives (1) knowledge and skills Objectives: Correct understanding of the concept of tangent function, tangent concept will be used to solve or problem solving; (2) process and method of the goal: to experience the operation, (3) Emotional attitudes and values Objectives: In the process of problem solving, students should be trained to think and ask questions at multiple angles. In the process of solving problems, students’ ability to think and ask questions In exploring the process of the problem, we should cultivate students’ awareness of cooperation and exploration.2