《得数是8的加法和相应的减法》这部分教学内容是在学生已经掌握了得数是2、3、4、5、6、7的加法和相应的减法的基础上展开的,学生学习的难度不大,轻而易举就能学会新知识,但就在这样一节课的教学中却出现了“意外的精彩”。【教学片断】课件出示情境图。师:夏天非常炎热,小朋友们都喜欢游泳。谁来说一说图意?生:有5个小朋友在游泳 “The number of addition is 8 and the corresponding subtraction” This part of the teaching content is in the students have mastered the number of 2,3,4,5,6,7 addition and the corresponding subtraction based on the development of student learning Is not difficult, you can easily learn new knowledge, but in such a class of teaching there has been “surprising wonderful ”. [Piece of teaching] courseware to produce situation map. Teacher: Summer is very hot and the kids like to swim. Who said one thing? Health: There are five children swimming