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数学高考考试大纲指出:数学科考试要考查对数学思想方法和数学本质的理解水平,要考查进入高等学校继续学习的潜能.在中学数学教学中,借助题目,探寻其背后所蕴含的数学本质,是有助于学生达到这个要求的.下面,我们从多角度来揭示高考数学试题的本质,以期抛砖引玉.策略1换元凸显本质换元法是化简求值的一种重要的方法,通过整体代换可以化繁为简,通过化“多元”为“一元”达到降低难度的目的.教学中要让
The mathematics entrance examination exam outline points out: The mathematics examination examines the level of comprehension of mathematical thinking and mathematics essence, and examines the potential of entering the higher school for further study.With the help of the subject in middle school mathematics teaching, we explore the mathematical essence behind it, Is to help students meet this requirement.Next, we reveal the nature of college entrance examination mathematics questions from a multi-angle, with a view to throwing bricks and stones.Policy 1 Substitution highlights the essence of yuan is an important way to reduce the value of the whole Substitution can be simplified to simple, through the “multivariate ” for “one yuan ” to achieve the purpose of reducing the difficulty of teaching to let