第2课时 搭一搭(一)
北师大版 二年级下册
新课导入
搭一搭,试一试
13÷4=3(个)……1(根)…
余数
14÷ =3(个)······4 2(根)
15÷ =3(个)······4 3(根)
16÷ =4(个)······4 0(根)
17÷ =4(个)······4 1(根)
18÷ =4(个)······4 2(根)
19÷ =4(个)······4 3(根)
20÷ =5(个)······4 0(根)
推进新课
25
25÷ =6(个)······4 1 (根)
31
31÷ =7(个)······4 3 (根)
在除法计算中,余数都比除数小。
结论:
1.摆一摆,算一算。
16 5 3 个 1 根
3
1
随堂练习
27 6 4 个 3 个
4
3
15÷7=
16÷7=
17÷7=
18÷7=
19÷7=
20÷7=
21÷7=
33÷4= 7(个)······ 5(根)8(个) 1(根) 33÷4= ······8 1(根)(根)(个)
课堂小结
通过这节课的学习活动,你
有什么收获?
1.从课后习题中选取;
2.完成练习册本课时的习题。
课后作业