“不等号”的认识很简单:2>1,1<2。学生有了数序概念的基础,单独比较10以内数的大小并不困难。这一部分内容教学的难点在于“数与式比大小”,如:2=2,2-1<2,2+1>2。怎样向才入学几天的孩子们说明这个问题呢?我把玩具跷跷板做成了实物教具。孩子们看到跷跷板左边坐着两个布娃娃,右边也坐着两个布娃娃,跷跷板保持平衡,显示器上出现2=2;左边有一介布娃娃掉下去,只剩下一个布娃娃,跷跷板左边 The notion of inequality is simple: 2> 1, 1 <2. Students have a number of concepts based on the number of separate than 10 within the size of the number is not difficult. The difficulty of teaching this part of the content lies in the “number and the ratio of size”, such as: 2 = 2,2-1 <2,2 +1> 2. How do I explain this to children who have only been in school for a few days? I made the toys a seesaw in kind. The children saw two rag dolls sitting on the left side of the seesaw and two rag dolls sitting on the right side. The seesaw was balanced and 2 = 2 appeared on the display. There was a cloth doll falling to the left, leaving only a cloth doll and the left side of the seesaw