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一、充分利用课文,培养推理能力。如推导有理数乘法法則,可在学生明确两个有理数相乘有哪几种情况的基础上,看书回答以下四式的结果和依据:①3×2;②(-3)×2;③3×(-2);④(-3)×(-2)。最后通过观察比较,归纳出法则。二、增加判断练习,培养判断能力。如讲授概念后,可让学生进行变式训练。三、加强例、习题解前分析,培养观察和分析能力。四、“文”、“式”对照,培养想象能力。如记忆单项式乘法法则,
First, make full use of texts to develop reasoning skills. For example, if the rational multiplier multiplication rule is deducted, the students can answer the results and basis of the following four formulas on the basis of the fact that the students clarify which of the two rational numbers are multiplied. 13×2; 2(-3)×2; 33×(- 2); 4(-3)×(-2). Finally, by observing and comparing, we sum up the rules. Second, increase the judgment exercise, develop judgment ability. After teaching the concept, students can undergo variant training. Third, strengthen the analysis of cases and exercises, and cultivate observation and analysis capabilities. Fourth, “literature” and “style” control, training imagination. Such as memory monomial multiplication,