【片断回放】教学人教版教材小学数学一年级下册“整十数加、减整十数”例1之后,教师为了巩固所学知识,用投影出示课本62页“做一做”的第2题:3+2=4+5=6-4=7-3=30+20=40+50=60-40=70-30=师:同学们,刚才咱们一起学习了整十数加、减整十数,同学们学会了吗?生:学会了。师:老师想考考你们,有信心吗?生:有!师:请看大屏幕,这里有儿道练习,看谁做得又对 [Piece replay] Teaching PEP textbooks primary school mathematics first grade “” the whole number of plus, minus ten “After 1, the teacher in order to consolidate what he has learned, using projection to produce textbooks 62 pages ”2: 3 +2 = 4 +5 = 6-4 = 7-3 = 30 +20 = 40 +50 = 60-40 = 70-30 = Teacher: Students, just let's learn the whole Ten plus, minus ten, students learned it? Health: learned. Teacher: Teacher wants to test you, have confidence? Health: Yes! Teacher: Look at the big screen, there are children practicing, see who did it again