出版	Kids Can Press, 1992
主題	Juvenile Nonfiction / Concepts / Size & ShapeJuvenile Nonfiction / Mathematics / GeneralJuvenile Nonfiction / Mathematics / Geometry
ISBN	15507406449781550740646
URL	http://books.google.com.hk/books?id=pPeYz4kTSq0C&hl=&source=gbs_api

註釋Math becomes concrete and real when kids read about the many kinds of circles and find out how they're important in the real world. Circles have many surprising applications beyond the geometry adults remember.