实行高中数学新课程之后,原本三年学习的内容构成的必修课要在不到一年半的时间内学完,进度快,课时紧,是一个突出的矛盾。解决这一矛盾的唯一办法,就是在备课时对教材作一番“精中求简”的思考。这就要求我们在备课中做到大处着眼,细处着手。所谓大处着眼就是要明确本节课在数学中的地位和学 After the implementation of the new curriculum of high school mathematics, it is a conspicuous contradiction that compulsory courses composing the contents of the original three years of study must be completed in less than one and a half years, with fast progress and tight class hours. The only way to solve this contradiction is to make some reflections on teaching materials when preparing lessons. This requires us to do a great deal of lesson preparation, detail work. The so-called big point is to clear the class in mathematics in the position and learning