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可在安卓获取CIRCLE, CIRCUMFERENCE AND AREA的历史版本
圆，半径，直径，周长和面积的概念。
Students of 7th grade can learn basic concepts of circle, radius, diameter, circumference and circle area using interactive graphics.
There are problems with random numbers to explore circumference, rectangle and circle area calculations.
最新版本2.5更新日志
Last updated on 2016年08月03日
Minor bug fixes and improvements. Install or update to the newest version to check it out!
翻译中...
CIRCLE, CIRCUMFERENCE AND AREA
2.5 by Antonio Luis Climent Albaladejo
2016年08月03日