How did we get our number symbols?

Did you ever wonder where we got our number symbols from?

Let’s look at some other ancient civilizations, and see how they used symbols to represent numbers.

Picture 1

Picture 1

What do you notice? Is it easy to understand? How would you write the number 18?

Picture 2

Now look at this.

Screen Shot 2013-08-26 at 8.09.27 AM

What do you notice? Is it easy to understand? How would you write the number 18?

Picture 3

Now look at these.

Screen Shot 2013-08-26 at 8.08.59 AM      Screen Shot 2013-08-26 at 8.09.06 AM

What do you notice? Is it easy to understand? How would you write the number 18?

Picture 4

What about this?

Screen Shot 2013-08-26 at 8.09.13 AM

thinking_animatedDid you notice something very important?

Where’s the ZERO?!!!     

rbowswrl

Now…. in pairs choose from the following number systems, and do some research. Find out what you can about your chosen system, and get ready to share what you find with the rest of the class.

Find a picture, and two interesting facts about your chosen numerals.

Roman numerals                      Arabic numerals                    Chinese numerals

Egyptian numerals                    Indian numerals                    Viking numerals

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