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课本中的例题和习题都是十分典型的,它们具有知识的基础性、解答的规范性、应用的广泛性以及可推广性和研究性等特点,因而成为各类命题取之不尽、用之不竭的源泉.对课本中的题目进行变式、衍生、适度综合,找准知识的生长点和发散点进行改编,则能扩大问题的应用价值.本文就以新浙教版八上19页课内练习第2题为例进行有效探索,希望能为教师
Examples and exercises in the textbook are very typical, they have the basic knowledge, the standardization of answers, the application of extensive and can be extended and research characteristics, which has become the inexhaustible of all kinds of propositions, with Inexhaustible source.Changes in the topics in the textbook of variants, derivatives, appropriate synthesis, identify the growth and divergence of knowledge adaptation, you can expand the application value of the problem. Class 2 exercises as an example of effective exploration, hoping to be a teacher