

单元6:测量
Presentation
•
Science
•
3rd Grade
•
Hard
Candy Lee
Used 5+ times
FREE Resource
7 Slides • 0 Questions
1
y3 科学
单元6:测量

2
面积
面积是测量物体表面的大小
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面积单位
平方公里 km2
平方米 m2
平方厘米 cm2
平方毫米 mm2
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面积有分成
1)规律
2)不规律
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规律
1)固定形状
2)算法:长 x 宽
3)example:长方形、正方形。。。。。。
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例子:
计算长方形的面积
8cm x 4cm = 32 cm2
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计算正方形的面积。
y3 科学
单元6:测量

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