数学二年级上册各单元知识要点.docxVIP

数学二年级上册各单元知识要点

目录

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

1.数的认识..............................................4

1.1单位数与序数.......................................4

1.2位数与数位顺序.....................................6

1.3数的顺序比较.......................................7

2.四则运算..............................................7

2.1加法与减法.........................................8

2.2乘法与除法.........................................9

2.3运算符号及运算律..................................11

3.初步问题解决.........................................12

3.1实际问题的列式计算................................13

3.2列方程解决问题....................................13

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

1.认识图形.............................................15

1.1平面图形..........................................15

1.2立体图形..........................................17

2.图形的性质...........................................18

2.1常用几何图形的特征................................19

2.2图形变换..........................................20

3.图表与统计...........................................21

3.1条形统计图........................................22

3.2折线统计图........................................24

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

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

1.1数据收集与整理....................................27

1.2数据表示方法......................................28

2.概率的初步认识.......................................29

2.1可能性大小........................................30

2.2概率计算公式......................................31

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

1.实际问题与数学模型...................................32

1.1数学模型的建立与应用..............................33

1.2实际问题的解决策略................................34

2.数学思考与逻辑推理...................................36

2.1逻辑推理的基本方法................................37

2.2数学思考的过程和方法..............................38

五、第五单元.....