关于“负零”的理解和教学

On the Understanding and Teaching of "Negative Zero"

通过对"负零"的深入理解,举了一个教学案例,在该案例中融入了数学概念的挖掘与剖析,并且归纳出负号的两层含义,解决了实际教学中的难题。文章的后两部分对案例进行评析和思考,提出一些教学观点。

Through the deep understanding of"negative zero",a teaching case is given,in which the tapping and analysis of mathematical concepts are integrated,and the two meanings of negative sign are summed up to solve the problems in practical teaching.In the last two parts of the article,the author evaluates and reflects on the case and puts forward some teaching ideas.