Changes

==Mayan base 20 numerals==

==Mayan base 20 numerals==

Mayan is also a candidate, notable because it is the only one of these visual numeral systems with a numeral for zero, but Mayan has not yet been added to Unicode. Mayan numerals go up to 20. This is often interpreted as counting on fingers and toes, with groupings of five for hands and feet, although we have no other evidence for how they began.  

Mayan is also a candidate, notable because it is the only one of these visual numeral systems with a numeral for zero, but Mayan has not yet been added to Unicode. Mayan numerals go up to 20. This is often interpreted as counting on fingers and toes, with groupings of five for hands and feet, although we have no other evidence for how they began. The following is a schematic rendering of the Mayan numerals.

[[File:MayanNumerals.svg]]

[[File:MayanNumerals.svg]]

We can teach the Turtle to write numbers in Mayan glyphs in base 20. Only the shell glyph for 0 requires any real thought.

 

 

We can teach the Turtle to write numbers in Mayan style in base 20. I am using an empty circle for 0 with these simplified forms rather than the actual Mayan shell glyph.

[[File:TAMayanNumerals.png]]

[[File:TAMayanNumerals.png]]