Sir Cumference (series of books)

Sir Cumference is a series of children's educational books about math, by Cindy Neuschwander and Wayne Geehan. Currently, there are 5 books in the series: "Sir Cumference and the First Round Table", "Sir Cumference and the Dragon of Pi", "Sir Cumference and the Great Knight of Angleland", "Sir Cumference and the Sword in the Cone", and "Sir Cumference and the Isle of Immeter".

Characters

Most of the characters of the book are named after math terms, such as Sir Cumference (circumference).

ir Cumference

Sir Cumference is a knight in the kingdom of Camelot. He has a wife called Lady Di of Ameter and a son named Radius.

Di of Ameter

Di of Ameter is the wife of Sir Cumference. In the first book, she came up with all the different shapes of the table (parallelogram, square, etc.) and in "Sir Cumference and the Dragon of Pi", she stayed with Sir Cumference when he turned into a dragon.

Radius

Radius is the son of Di of Ameter and Sir Cumference. He has a friend named Vertex in "Sir Cumference and the Sword in the Cone", and plays an important role in both "Sir Cumference and the Dragon of Pi" and "The Sword in the Cone" first by turning his father to a dragon and back, and later assisting Vertex in becoming King. He is the focus of "Sir Cumference and the Great Knight of Angleland", in which he becomes a knight after rescuing King Lell and his pair of dragons.

geo and sim of metry