Eichhorn 100003405 Abacus Wooden is available in Counting Frames
The abacus, also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes.
Today, abaci are often constructed as a bamboo frame with beads sliding on wires, but originally they were beans or stones moved in grooves in sand or on tablets of wood, stone, or metal.
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This review is from: Eichhorn 100003405 Abacus Wooden (Toy)
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