Aztec Sun Calendars

This calendar was made by the Aztecs of Mexico.  It was found hidden and buried in the main square of Mexico City in 1790.  It measures three feet thick by twelve feet in diameter and weighs twenty four tons.  There are twenty days in each months and eighteen months in the Aztec year.  The days were named after various aspects of nature, such as rain, eagle, and water.  The Central figure is the sun, Tonatiuh, which they worshiped.  

First grade students compared our calendar to the Aztec sun calendar.  They used simple shapes to fill the outer ring and then created a sun in the middle.  As you can see, many of them decided to mimic Tonatiuh and his protruding tongue.