The Maya Long Count system uses a base 20 number system. Review the difference between the base 10 system, which students are familiar with, and a base 20 system.

Finally, students wrote reports to a fictitious foundation describing the structure of the Maya number system and explaining how they reached their conclusions.

CHICO — If the end of the world has not yet arrived by Saturday, Gateway Science Museum will host an education station that explores the Mayan number system. From 1-3 p.m., visitors may learn ...