(SLOW) Area of Circles(2) 圓面積(2)
understand the formula of area of circles.
References:
1. [url]http://www.geogebratube.org/material/show/id/23525[/url]
2. [url]http://www.geogebratube.org/material/show/id/279[/url]
- Target Group (Age)
- 11 – 14
- Language
- English (United States)
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