![Hewitt Homeschooling on Twitter: "The Salamis Tablet is a marble counting board from the Greek island of Salamis dating to 300 B.C. It's a precursor to the abacus. #MathFactMonday #TheMoreYouKnow https://t.co/XMpuQ5U3ks" / Hewitt Homeschooling on Twitter: "The Salamis Tablet is a marble counting board from the Greek island of Salamis dating to 300 B.C. It's a precursor to the abacus. #MathFactMonday #TheMoreYouKnow https://t.co/XMpuQ5U3ks" /](https://pbs.twimg.com/media/FdmFO6cXwAALwb3.jpg)
Hewitt Homeschooling on Twitter: "The Salamis Tablet is a marble counting board from the Greek island of Salamis dating to 300 B.C. It's a precursor to the abacus. #MathFactMonday #TheMoreYouKnow https://t.co/XMpuQ5U3ks" /
![The Salamis Tablet is the world's oldest surviving counting board (which was the precursor of the abacus, and the earliest known form of a counting device). Dating from around 300 BCE, it's The Salamis Tablet is the world's oldest surviving counting board (which was the precursor of the abacus, and the earliest known form of a counting device). Dating from around 300 BCE, it's](https://preview.redd.it/xw7s346d6bg81.jpg?auto=webp&s=9873806dfa6c2b9481d795646d7d1fc46a37442c)
The Salamis Tablet is the world's oldest surviving counting board (which was the precursor of the abacus, and the earliest known form of a counting device). Dating from around 300 BCE, it's
![File:Eglise - Dalle funéraire à effigie gravée de Guillaume de Fougerolles, commandeur de Bures mort en 1351 - Bure-les-Templiers - Médiathèque de l'architecture et du patrimoine - APMH00020642.jpg - Wikimedia Commons File:Eglise - Dalle funéraire à effigie gravée de Guillaume de Fougerolles, commandeur de Bures mort en 1351 - Bure-les-Templiers - Médiathèque de l'architecture et du patrimoine - APMH00020642.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/7/76/Eglise_-_Dalle_fun%C3%A9raire_%C3%A0_effigie_grav%C3%A9e_de_Guillaume_de_Fougerolles%2C_commandeur_de_Bures_mort_en_1351_-_Bure-les-Templiers_-_M%C3%A9diath%C3%A8que_de_l%27architecture_et_du_patrimoine_-_APMH00020642.jpg)
File:Eglise - Dalle funéraire à effigie gravée de Guillaume de Fougerolles, commandeur de Bures mort en 1351 - Bure-les-Templiers - Médiathèque de l'architecture et du patrimoine - APMH00020642.jpg - Wikimedia Commons
![1a,b: Salamis tablet (oldest known counting board); Roman tabula with... | Download Scientific Diagram 1a,b: Salamis tablet (oldest known counting board); Roman tabula with... | Download Scientific Diagram](https://www.researchgate.net/publication/37991498/figure/fig6/AS:652580690612225@1532598769310/a-b-Salamis-tablet-oldest-known-counting-board-Roman-tabula-with-spherical-pebbles.png)