Students investigate Mayan Numbers. For this algebra lesson, students compare our number system to the number system of the Mayans. They identify base 10 and base 20 numbers including zero in the Mayan symbols. They solve a Mayan problem.

Sixth graders experiment with an atlatl and dart.  In this sixth grade data management mathematics lesson, 6th graders explore and determine the most suitable methods of displaying data collected from their experimentation with...