一道高考数学试题的赏析与教学启示

摘要

考生普遍反应2011年高考数学安徽卷很难，而理科第19题又是全卷最难的一题。其实，该题的绝对难度不难，对考生而言，它到底难在哪里？我们对该题进行了全面分析、追根溯源，并全方位地进行了解法探究，寻求问题产生的根源及其对教学的启示。%It was generally recognized that mathematics in 2011 college entrance examination in Anhui were really tough, among which No. 19 was particularly difficult. In fact, its absolute difficulty coefficient was not that. We conducted a comprehensive analysis on the problem, solutions and its implications for teaching.