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对于数学的教学,不能只让学生多做题多练习多背公式,培养学生的数感也是提高学生成绩的重要因素,如何培养学生的数感呢?除了多练多思考,还要善于总结归类。在进行高三抛物线复习时,经常会遇到抛物线的两条切线问题,通过对这类习题的总结,不仅可以帮助学生快捷地解决抛物线双切线问题,更培养了学生的数感。
For mathematics teaching, we can not just let students do more exercises to practice more than the formula, to cultivate the sense of number of students is also an important factor to improve students’ performance, how to cultivate the sense of number of students? In addition to practice more thinking, but also good at summing up class. In the third year of the parabola review, we often encounter the two tangent of the parabola. Through the summary of these exercises, not only can help students solve the problem of parabola tangent quickly, but also cultivate students’ sense of number.