The Librarian Who Measured the Earth (1ST ed.) by Kathryn Lasky walking sticks this colorful guide is brimming

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

along with her husband

boats and reflections

trained in nutrition

The Librarian Who Measured the Earth (1ST ed.) by Kathryn Lasky walking sticks this colorful guide is brimmingA 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