1. Copy the question and answer in sentences:
Walk In
Please turn in yellow HGD sheets to the blue wire basket on the demo table.
Copy the question and answer in sentences:
Why might our number system be based on 10, while the Mayans based theirs on 20?

2. Answer
Our system of Base 10 numbers might have begun by people counting on their fingers.
The Mayan system of Base 20 numbers might have started by people counting on their fingers and toes.

3. Mayan Math

4. Mayan Math
The Mayans developed a system of math that used only three symbols.
The football shape is zero.
The dot is for one.
The bar is for five.

5. Video Clip about Mayan Math
Watch the video to understand more about how their math works!
Go to the class webpage, go to Mesoamerican Civilizations, and scroll to Day 11 – Mayan Math.
Try writing all the numbers from 1 to 19 using Mayan Math #1 and #2.
Try interactive number games and challenges at Mayan Math Interactive Website!