The Librarian Who Measured the Earth 50 hikes with kids New York Times bestselling author

New York Times bestselling author of You Can't Touch My Hair

anxious immigrants and grand tycoons -- and

365-day devotions: encouragement for every day of the year

Native American

Set in Namibia just after independence in the early 1990s

The Librarian Who Measured the Earth 50 hikes with kids New York Times bestselling authorA 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