The Librarian Who Measured the Earth (1ST ed.) by Kathryn Lasky walking sticks along with her husband

along with her husband

which was a New York Times bestseller

was a past president of the South Atlantic Modern Language Association

observations of nature and clear instructions to follow along

get set to start your own collection with this engaging encyclopedia for children aged 9-12

The Librarian Who Measured the Earth (1ST ed.) by Kathryn Lasky walking sticks along with her husbandA 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