论文部分内容阅读
在数学教学中,学生有这样反映:老师讲的我们懂,但临到自己做题目时就有些模糊;稍微难一点的题目就无从下手了。怎样解决这个问题?大家认为,在数学过程中把教与练结合起来是一个办法,起初,有的同志还怀疑,课堂上增加了练习的时间,就相对地减少了讲书的时间,会不会影响教学进度?能不能讲深讲透?因此我们就进行试验。高中一年级代数正要讲授一元二次方程的根与系数的关系,先提问有关一元二次方程的标准式及它的两个实数根的问题以后,随即布置学生练习(写在练习簿上)。一组学生解方程:(1)x~2+5x-6=0,(2)2x~2
In mathematics teaching, students reflect this way: The teacher tells us that we understand, but it is a little vague when it comes to his own subject; a little difficult topic can not be started. How to solve this problem? In our view, it is a way to combine teaching and practicing in the process of mathematics. At first, some comrades also doubted that the time spent practicing in the classroom reduced the time spent on speaking and would not Will affect the progress of teaching? Can you talk about thoroughly? So we will test. The first grade of high school is about to teach the relationship between root and coefficient of a quadratic equation. After asking the question about the standard formula of quadratic equation and its two real roots, the student practice (written on the exercise book) . A group of students solve the equation: (1) x ~ 2 + 5x-6 = 0, (2) 2x ~ 2