The librarian who measured the earth - kathryn lasky

Lasky pens this colorfully illustrated biography of the Greek philosopher and scientist Eratosthenes, who compiled the first geography book and accurately measured the globes circumference.

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 globes circumference, is just right for budding mathematicians, scientists, historians, and librarians Filled with fascinating details about Eratostheness world (and in print since 1994), kids are sure to flip through the pages time and again.