1. Hieroglyphic Numerals

2. Egyptian numerals Additive System

3. The eye of Horus

4. The Battle of Seth and Horus  Seth murders his brother Osiris  Horus goes to revenge his father  Big    Seth mutilates Horus’ eye  Horus castrates Seth  Thote collects pieces of eye and heals it  Eye is now symbol of wholeness

5. Earliest engraving King Narmer’s club handle 3000-2900 BC

6. Egyptian hieratic numerals

7. Greek Acrophonic Numerals

8. Greek acrophonic numerals Multiplicative System

9. Roman Numerals

10. Roman Numerals

11. Roman numerals

12. Development of Roman Numerals for Large Numbers

13. Archaic Chinese numerals 14 th – 11 th centuries BC

14. Archaic Chinese Numerals

15. Those Magnificent Mayans

16. Ordinary Mayan numerals

17. Zero Ground zero Japanese zero

18. Zero Origin- Arabic al-sifer = zero Hundi- sunya = void, empty - shunya = zero English- cipher = meaning empty space old names- aught, naught, and cipher

19. The History of Zero

20. The Abacus Latin = abacus/abaci Greek = abax or abakon = table or tray From Semitic word abq= dust, sand

21. The Table of Salamis 4 th or 5 th century BC Found on the island of Salamis in 1846

22. Ancient Counting Devices

23. Ancient Chinese counting grid

24. Counting devices of the Middle Ages

25. Modern Abaci