El calendario

A calendar can help people to count how long it is until their birthday. Calendars measure days, weeks, months, and years.Learn about different types of calendars and the history of measuring days, weeks, months, and years in Calendar, an All AboutMeasuring book. Each book in this series helps children learn basic measuring concepts. Simple, engaging text and colorfulphotos help students gain a better understanding of measurement fundamentals and encourage a love of reading.