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近年来,中学数学教学和复习参考资料的数量和品种迅速增加,很多数学教师手头都积累了大量的数学练习题和测验题。而由于初中生时间和精力的限制,只可能从中选择一小部分作为补充题,让学生练习。所以,怎样选择补充题,就成为一个值得讨论的问题了。为了少花时间,多得收获,选题必须有针对性。选择补充题目时,固然要看到每一道具体题目的优点,但更重要的是胸有全局。要象医生看病一样,经常分析薄弱环节,对症下药,选做相应的练习题。大致说来,所选题目应当注重培
In recent years, the number and varieties of reference materials for middle school mathematics teaching and review have rapidly increased. Many math teachers have accumulated a large number of math exercises and test questions on hand. Due to the time and energy constraints of junior high school students, only a small part may be selected as a supplementary question for students to practice. So, how to choose complementary questions, it becomes a question worth discussing. In order to spend less time, get more harvest, the topic must be targeted. While choosing supplementary questions, you certainly see the merits of each specific topic, but more importantly, you have the overall situation in mind. Like a doctor to see a doctor, often analyze the weak links, the right medicine, choose to do the appropriate exercises. Generally speaking, the selected topics should focus on training