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在过去的一段时间里,数学教学的“目标方向”有所偏离,片面追求升学率,甚至不惜放弃大多数的中等生与后进生,教师的全部精力投向优等生。事实证明:只要求学生解习题,而不给学生讲透数学概念、实质问题,等于只是给了学生一把对号开锁的钥匙,而不是教给学生解剖锁的结构原理。不交给学生一把万能钥匙,学生是很难找到窍门的。因此有必要进行系统而又严肃的概念教学,事实上数学知识都是以概念为基础的。要使学生获得系统
For some time in the past, the “target direction” of mathematics teaching has deviated from one-sided pursuit of the entrance rate, even giving up most of the secondary and post-graduation students. All the teachers’ energies are on the top students. Facts have proved that only asking students to solve the problem, rather than to students to penetrate mathematical concepts, the essence of the problem, is equivalent to only give the student a key to unlock, not to teach students the anatomy of the structural principle of the lock. Do not give students a master key, the students is hard to find tips. Therefore, systematic and serious conceptual teaching is necessary. In fact, mathematical knowledge is conceptually based. To get students to get the system