本节课是付昕老师在秦皇岛市高中数学教研活动中上的一节公开课.本节课内容为人教A版教材数学必修⑤第三章不等式,3.4基本不等式ab~(1/2)≤a+b/2(a,b>0),是学生学习了3.1不等关系与不等式之后,对不等式性质的进一步研究.本节课付老师采用了学案导学教学法,并对导学案进行了精心设计,整个导学案问题设计巧妙、自然、层层递进,使学生在解决问题中不断前进、提升,在探究、质疑过程中拾级而上,轻松进入知识的殿堂.时下学案导学之风盛行,但如何编写好导学案似 This lesson is Fu Xin teacher in Qinhuangdao high school mathematics teaching and research activities in an open class in this lesson for people to teach A version of the textbook math compulsory ⑤ third chapter inequality, 3.4 basic inequalities ab ~ (1/2) ≤a + b / 2 (a, b> 0) is a further study of the nature of inequality after the students have studied 3.1 unequal relations and inequalities.In this lesson, the teacher adopted the case study teaching method, Case study has been carefully designed, the entire guide case design clever, natural, progressive at all levels, so that students continue to solve problems in the process of upgrading, in the process of inquiry, questioning up the stairs, easy access to the temple of knowledge. The prevalence of case study guide, but how to prepare a good guide case