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新课程提出教师要在理解课程的基础上,挖掘丰富的课程资源,以自己先进的理念创造性地使用教材。我们应及时转变教学观念,从学生认知能力的实际出发,重视教师在教学活动中的主导作用,发挥学生在教学活动中的主体地位,引导学生掌握科学的思维方法,学会探索和创新。平均变化率是建立数学重要概念——导数的基石,对理解导
The new curriculum proposes that teachers should enrich the curriculum resources based on the understanding of the curriculum and creatively use the teaching materials with their own advanced concepts. We should promptly change the teaching concept, start from the reality of students ’cognitive ability, attach great importance to the leading role of teachers in teaching activities, give full play to students’ dominant position in teaching activities, guide students to master scientific thinking methods, and learn to explore and innovate. The average rate of change is to establish the important concept of mathematics - the cornerstone of derivatives, to understand the guide