This is 4
Subtitle: the idea of a number
By: by Arthur G. Razzell and K. G. O. Watts. Illustrated by Ellen Raskin.
Contributors: Watts, K. G. O. joint author.; Raskin, Ellen, illus.
Edition: [1st ed.]
Series: Exploring mathematics
Publisher: Doubleday
Published: 1967
Place of publication: Garden City, N.Y
Language: eng
Number of pages: 47
Subjects: Four (The number) -- Juvenile literature.; Mathematics -- Juvenile literature.; Four (The number); Mathematics.
Description: What is four?  Where do you find it?  Answers to these questions, and many others, plus amazing puzzles with squares are found in this book.