一、学好基础知識是提高运算解题技能的前提加强基本技能,特別是解題計算技能的培养,是提高数学教学貭量的一个重要方面,而教好基础知識,又是提高基本技能的前提和基础。例如,算术根的概念沒讲清楚,学生在运算中就容易发生錯誤,如不考虑条件就得出((a-b)~2)~(1/2)=a-b;把方程x~2=4的根写成x=2或者x=4~(1/2)=±2,等等。对于重要的定理、公式、定律、法则,也只有在充分理解的基础上,牢固記忆,掌握推导关系,解題时才能得心应手,万一公式記不清,也可以随时推导。如学生往往把三角形求高公式h_a= First, to learn basic knowledge is to improve the operational skills problems Prerequisite to strengthen the basic skills, in particular, solving problem-solving skills is to improve mathematics teaching is an important aspect of the teaching of basic knowledge, but also to improve the basic skills of the premise and basis. For example, if the concept of arithmetic root is not clearly defined, students are prone to error in the calculation. For example, (ab) ~ 2) ~ (1/2) = ab is obtained without considering the conditions. The root is written as x = 2 or x = 4 ~ (1/2) = ± 2, and so on. For important theorems, formulas, laws and rules, only when fully comprehended, can we firmly remember and grasp the derivation of relations so that they can be handy when solving problems. If the formulas can not be clearly labeled, they can be deduced at any time. If students tend to triangle elevation formula h_a =