一、教学内容苏教版《义务教育课程标准实验教科书数学》五年级(上册)第1～3页的例1、例2及相应的“试一试”和第6页练习一的第1～5题。二、教学目标在现实情境中了解负数产生的背景,初步认识负数,知道正数和负数的读写方法;知道0既不是正数,也不是负数,负数都小于0。初步学会 First, the teaching content Sujiao version of “Compulsory Education Curriculum Standard Experimental Textbook Mathematics” fifth grade (Volume 1) of the first 1 to 3 pages of Example 1, Example 2 and the corresponding “Try It” and the sixth page of practice a ~ 5 questions. Second, the teaching objectives Understand the background of negative situations in the real situation, a preliminary understanding of negative numbers, know positive and negative reading and writing methods; know 0 is neither positive nor negative, negative numbers are less than 0. Preliminary learning