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【案例背景】激励性评价是一种激发学生的内在需要和动机,鼓励学生自觉主动地提高自身素质的价值判断活动,能帮助学生认识自我,肯定自我。在数学课堂教学中如何恰当运用激励性评价,成为教师面对的疑难问题。下面我就对两位教师在上《“一元二次方程的解法”复习课》课中的评价片段,谈谈体会。【案例描述A】甲教师的上课片段在“一元二次方程的解法”复习课上,教师出示如下练习题:请用适当的方法解下列一元二次方程:(1)x2-3x=0;(2)x2-6x+9=0;(3)x2-3x+1=0;(4)x2-3x+2=0;
Case Background Incentive evaluation is a kind of value judging activity that arouses students’ intrinsic needs and motivation and encourages students to improve their own quality voluntarily. It can help students to recognize themselves and affirm themselves. How to properly use the incentive evaluation in the classroom teaching of mathematics has become a difficult problem faced by teachers. Now I will talk about the two teachers in the “” quadratic equation solution “review class ” section of the evaluation, to talk about experience. 【Case Description A】 A teacher’s lesson fragment In the “quadratic equation solution” review class, the teacher showed the following exercise: Please use the appropriate method to solve the following quadratic quadratic equation: (1) x2-3x = 0; (2) x2-6x + 9 = 0; (3) x2-3x + 1 = 0;