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一般认为,要上一节既有复习,又有发展,复习知识和培养能力并重的好复习练习课,不容易。这里,我们向大家介绍塘沽一中曹振华老师的一节关于三角函数的恒等变形的复习课,供大家研究。
It is generally believed that it is not easy to review and develop in the previous section. It is not easy to review knowledge and cultivate abilities to review practice lessons. Here, we will introduce to you a section of the Tanggu Yizhong Teacher Cao Zhenhua’s review of the trigonometric function’s constant deformation.