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11
Who invented the abacus?
The Babylonians invented the abacus.
The abacus, the first adding machine, was invented in 3000Bc.
The abacus, the first adding machine, was invented in 3000Bc.
Tags:
Quelle: Usborne Book of Inventors and Inventions.
Quelle: Usborne Book of Inventors and Inventions.
Karteninfo:
Autor: CoboCards-User
Oberthema: Social Science
Thema: Inventors and Inventions
Schule / Uni: University of Albany
Ort: New York
Veröffentlicht: 24.03.2013