Rocks and minerals are great on their own, but they also turn into some pretty amazing stuff! An online lesson explains the different types of materials we get from rocks and minerals, including glass, plastic, and coins. An embedded...

First graders, after reading about cattle drives, measure the width of the horns on drawings of longhorn cattle and then convert the measurements from inches to centimeters and from inches to feet. Ranching and the American cattle...

This article for tourists visiting the Mayan and Toltec city of Chichen Itza features information about the site's access and history.