Describes the life and work of Eratosthenes, the Greek geographer and astronomer who accurately measured the circumference of the Earth.

A perfect introduction to mathematical concepts for young readers, written by a Newbery honor-winning author!

This colorfully illustrated biography of the Greek philosopher and scientist Eratosthenes, who compiled the first geography book and accurately measured the globe's circumference, is just right for budding mathematicians, scientists, historians, and librarians! Filled with fascinating details about Eratosthenes's world (and in print since 1994), kids are sure to flip through the pages time and again.

A colorfully illustrated biography of the Greek philosopher and scientist Eratosthenes, who compiled the first geography book and accurately measured the globe's circumference.