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Handout
Wikimedia

Wikipedia: Abacus

For Students 9th - 10th
This site contains a Wikipedia description of an abacus.
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Unit Plan
Computer History Museum

Computer History Museum: Abacus

For Students 9th - 10th
The Computer History Museum located in Mountain View, California, provides a glimpse into the development of the information age via their large collection of artifacts. This section highlights the development and use of the abacus, "a...
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Article
History of Computing Science

History of Computing Science: A Primitive Calculator

For Students 9th - 10th
The abacus is an ancient calculating tool. This lecture series presents a brief description of the abacus and its use.