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### Egypt, Babylon, and the rest of the world. Egypt ... 4 2 = 6 or 4, 5, 6. Subtraction is counting backwards. 4 2 = 2 or 4, 3, 2 ... – PowerPoint PPT presentation

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1
• The History of Zero and its Importance in Modern
Mathematics
• Abbie Corwin

2
What do you know about zero?
3
Before Zero
• Successful number systems existed thousands of
years before the numeral 0
• Egypt, Babylon, and the rest of the world

4
Egypt
• (images http//www-groups.dcs.st-and.ac.uk/histo
ry/HistTopics/Egyptian_numerals.html)
• 3000 BC, working writing system based on figures
carved into clay, hieroglyphs
• Numbers written top down, largest on top
• Able to add and subtract, common unit fractions

5
Babylon
• (image http//www-groups.dcs.st-and.ac.uk/histor
y/HistTopics/Egyptian_numerals.html)
• 2000 BC, sexagesimal system
• Positional system
• Use context to clear up confusion with numbers
like 2 and 60

6
Rest of the World
• Chinese had a problem based system
• Only China had a decimal place value number
system
• Information from anywhere else before 100 BC is
very limited

7
Rules of Basic Math
• Important to understand why the math that we
believe works actually works like it does
• Most of it breaks down into a simple repetition
of step below

8
• Addition is the process of continuous counting
• 4 2 6 or 4, 5, 6
• Subtraction is counting backwards
• 4 2 2 or 4, 3, 2

9
Multiplication and Division
• 4 2 8 or 4 4 8
• Division is repeated subtraction
• 4 2 2 or 4 2 2 0

10
Exponents and Roots
• Exponents are repeated multiplication
• 42 16 or 4 4 16
• Roots are repeated division
• 2v4 2 or (4 2) 2 1

11
My Thesis
• Past
• History of zero, from invention to acceptance
• Present
• Presence of zero in modern math, special rules
• Future
• Use of all this information in a high school
math classroom

12
Evaluation Criteria
• Research Component
• Depth, clarity, organization, and presentation
of information
• Analytical Component
• Presence and depth of mathematical connections
and relationships
• Creative Component
• Completion and thoroughness of
• completed curriculum

13