1、苏教版数学三年级下册第一单元,导入新课,探究新知,课堂练习,课后总结,拓展提升,情境设置,两位数乘两位数（进位）的笔算,情境设置,1,3,3,2,4,2,3,1,3,9,3,8,4,3,9,1,3,1,9,6,1,1,2,4,2,8,8,2,2,6,3,1,7,1,导入新课,探究新知,2,3,4,探究新知,2453= ( ),2,5,7,1,(3箱的个数),4,5,2,3,2,探究新知,2453= ( ),7,1,(3箱的个数),0,2,1,2,(50箱的个数),4,5,2,3,2,探究新知,2453= ( ),7,1,(3箱的个数),0,2,1,2,(50箱的个数),2,7,2,1,(53箱
2、的个数),1272,个,2,0,5,4,2,3,2,探究新知,2453= ( ),7,1,2,1,2,7,2,1,1272,个,验算：,2,6,2,3,5,4,2,1,1,0,1,7,2,1,2,2,0,5,4,2,3,2,探究新知,2453= ( ),7,1,2,1,2,7,2,1,1272,个,验算：,2,6,2,3,5,4,2,1,1,0,1,2,7,2,1,2,答：53箱一共1272个迷你南瓜。,第一关,课堂练习,笔算。,2,5,2,2,3,5,3,2,4,1,4,3,第一关,课堂练习,笔算。,2,5,2,2,3,5,3,2,4,1,4,3,0,6,9,6,11,2,0,3,4,17,2,17,6,3,0,1,4,4,0,5,5,1,1,1,1,1,1,第二关,课堂练习,4425=,用竖式计算并验算。,2,5,4,4,0,2 2,8,8,1 1,0,0,验算：,4,4,2,5,0,1 0,1 0,0,1,0,0,2,1,2,1,2,1100,拓展提升,找错误。,2,5,1,4,0,5,8,2,3,0,2,5,1,4,0,7,2,8,3,5,0,2,2,1,进位错误,课后总结,这节课你学会了什么？,在两位数乘两位数的进位笔算的过程中，不能忘记进位，数位要对齐。,
