数学二年级下册各单元知识树.docxVIP

数学二年级下册各单元知识树

目录

一、第一单元................................................3

1.数的认识..............................................3

1.1自然数.............................................4

1.2计数单位...........................................5

1.3数的顺序...........................................5

2.加法与减法（1）.........................................6

2.1加法概念与性质.....................................7

2.2减法概念与性质.....................................8

2.3加法与减法的联系与区别............................10

3.乘法与除法（1）........................................10

3.1乘法概念与性质....................................11

3.2除法概念与性质....................................12

3.3乘法与除法的联系与区别............................13

二、第二单元...............................................14

1.常见平面图形.........................................15

1.1三角形............................................17

1.2平行四边形........................................17

1.3正方形与长方形....................................19

2.图形的运动...........................................19

3.测量与长度...........................................21

3.1长度单位..........................................22

3.2长度的估算与比较..................................22

3.3测量工具的认识与应用..............................24

三、第三单元...............................................25

1.统计初步认识.........................................26

1.1数据收集的方法....................................27

1.2数据整理与表示....................................27

2.概率的初步认识.......................................28

2.1概率的基本概念....................................29

2.2概率的计算方法....................................30

四、第四单元...............................................32

1.实际问题与算术运算...................................33

1.1列方程解决实际问题................................34

1.2算术运算的整合与应用..............................35

2.几何图形的认识与运用.................................36

2.1图形的拼组与设计..................................37

2.2图形的运动与变换......