* Astronomy and the Mayan Calendar: The Mayans were skilled astronomers and made accurate observations of the movements of the sun, moon, and planets. They developed a complex calendar system that was based on a 365-day solar year and a 260-day ritual calendar. This calendar was used to predict astronomical events, such as eclipses, and to plan agricultural activities.
* Writing System: The Mayans created a writing system that used a combination of logograms (symbols that represent words) and syllabograms (symbols that represent syllables). This system was used to write codices or books, which were created on long strips of paper made from the bark of the fig tree. These books contain information about Mayan history, religion, and mythology.
* Mathematics: The Mayans developed a sophisticated mathematical system that included the concept of zero. They used a base-20 numeral system, which was similar to the one used by the ancient Egyptians. This system allowed them to perform complex calculations, such as multiplication, division, and geometry.