KEEPING HISTORY RECORDS AND INVENTIONS

• Writing tools

Although the archaeological record does not provide examples, Maya art shows that writing was done with brushes made with animal hair and quills. Codex-style writing was usually done in black ink with red highlights, giving rise to the Aztec name for the Maya territory as the "land of red and black".

• Scribes and Literacy

Scribes held a prominent position in Maya courts. Maya art often depicts rulers with trappings indicating they were scribes or at least able to write, such as having pen bundles in their headdresses. Additionally, many rulers have been found in conjunction with writing tools such as shell or clay inkpots.Although the number of logograms and syllabic symbols required to fully write the language numbered in the hundreds, literacy was not necessarily widespread beyond the elite classes. Graffiti uncovered in various contexts, including on fired bricks, shows nonsensical attempts to imitate the writing system.

• Mathematics

Mayan numerals
In common with the other Mesoamerican civilizations, the Maya used a base 20 (vigesimal) and base 5 numbering system (see Maya numerals). Also, the preclassic Maya and their neighbors independently developed the concept of zero by 36 BC. Inscriptions show them on occasion working with sums up to the hundreds of millions and dates so large it would take several lines just to represent it. They produced extremely accurate astronomical observations; their charts of the movements of the moon and planets are equal or superior to those of any other civilization working from naked eye observation.
In common with the other Mesoamerican civilizations, the Maya had measured the length of the solar year to a high degree of accuracy, far more accurate than that used in Europe as the basis of the Gregorian Calendar.

• Astronomy

Uniquely, there is some evidence to suggest the Maya appear to be the only pre-telescopic civilization to demonstrate knowledge of the Orion Nebula as being fuzzy, i.e. not a stellar pin-point. The information which supports this theory comes from a folk tale that deals with the Orion constellation's area of the sky. Their traditional hearths include in their middle a smudge of glowing fire that corresponds with the Orion Nebula. This is a significant clue to support the idea that the Maya detected a diffuse area of the sky contrary to the pin points of stars before the telescope was invented.
Dresden Codex contains the highest concentration of astronomical phenomena observations and calculations of any of the surviving texts (it appears that the data in this codex is primarily or exclusively of an astronomical nature). Examination and analysis of this codex reveals that Venus was the most important astronomical object to the Maya, even more important to them than the sun.