课本例题是对本节或本章内容的应用或检查,也是经过专家精心构思,反复斟酌的。恰当运用例题,揭示例题的本质特征,挖掘例题涉及的思想方法用以指导相关问题的解决。同时对教材例题由表及里深入挖掘,能培养学生思维的批判性;精选其变式,能培养学生思维的广阔性;引导学生对其探究和猜想,能培养学生思维的创造性。下面以北师大版高中数学必修五,第二章第二节正弦定理中例题为例。 Textbook example is the application or inspection of this section or this chapter, but also carefully conceived by experts, repeatedly considered. Proper use of examples, revealing the nature of the examples, digging examples of ideas involved in the method used to guide the solution of related issues. At the same time on the teaching materials examples from the table and mining in-depth, can cultivate the critical thinking of students; selection of its variants, can develop the broad thinking of students; guide students to explore and guess, to cultivate the creative thinking of students. The following to North Normal University high school mathematics compulsory five, the second chapter second section of the sine example in the case as an example.