Includes bibliographical references (page 24) and index.
Summary
Readers learn what the calendar measures and why knowing how to measure days, weeks, months, and years is important. They learn the history of the lunar and solar calendars, how days and months get their names, and the different calendars around the world. Sidebars instruct math by showing readers how to add and subtract days.
Contents
Counting down the days -- Sun and moon -- Moon gazing -- The first calendars -- Solar power -- Weeks -- Romans to the rescue -- Calendars of the world -- Months, days, and years, oh my! -- Track the dates.
