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数学运算时刻存在,随着学习的积累,探究的深入,运算的对象及运算的级次也随之得到了拓展和加深.进入高中阶段,遇到虚数,把研究的对象扩充到了复数域.从运算形式上,加减乘除四则运算到乘方开方再上升到函数导数等.所以,运算能力的培养是至关重要的.经过笔者的教学实践,发现高中生在计算方面存在诸多问题,主要表现在正确率低,耗时长且不严密.对于这些问题,本文给出一些教学实例进行探讨,希望对提高学生的运算能力有所帮助.
With the accumulation of learning, the deepening of inquiry, the object of calculation and the rank of calculation, the mathematics operation moment has also been expanded and deepened.When entering the high school, we encounter the imaginary numbers and extend the research object to the complex number field. The form of operation, addition, subtraction, multiplication and division of the four operations to the power of the square and then rise to the function derivative, etc. Therefore, the training of computing power is crucial.After the author’s teaching practice, found that there are many high school students in the calculation of the problem, the main The performance is low accuracy, time-consuming and not rigorous.To these problems, this article gives some teaching examples to explore, hoping to improve the computing power of students.