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1教学背景前不久,本人参加区学科带头人的评选,以苏教版必修4第1章第3节“正切函数的图象与性质”为题上了一节课,学生来自某四星级高中,基础较好,具备一定的思考、交流、探究的意识与能力.作为一节常规课,大家对它的研究并不多,很少作为公开课、研究课与教学评比的选题,因此可供参考的资料也较少.笔者将这一节内容初步设定为两个课时──建构正切函数图象与性质(第一课时),应用正切函数图象与性质(第二课时).
A teaching background Not long ago, I participated in the selection of academic leaders in the region, with the Supian version of Compulsory 4 Chapter 1 Section 3 “image and the nature of the tangent function ” on the topic of a class, students from a four As a regular class, there are not many researches on it, and seldom serve as the topics of open class, research class and teaching appraisement , So the information available for reference is also less.The author initially set the content of this section for two hours ─ ─ construction of tangent function images and nature (the first class), the application of tangent function image and the nature of the second class hours ).