The Librarian Who Measured the Earth (1ST ed.) by Kathryn Lasky walking sticks observations of nature and clear

observations of nature and clear instructions to follow along

this colorful guide is brimming with information on attracting and understanding backyard birds

which was a New York Times bestseller

it is clear that he has neither forgotten--nor forgiven--their past

boats and reflections

The Librarian Who Measured the Earth (1ST ed.) by Kathryn Lasky walking sticks observations of nature and clearA 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