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The History of Chisanbop – A Korean Finger Counting Method Used for Basic Math

Summary by Laughing Squid
Mathematics professor Chris Staeker explains the history of Chisanbop, a Korean finger counting and calculating method created in the 1940s by Sung Jin Pai and introduced to the United States in 1977 by his son Hang Young Pai. Chisanbop is a finger counting and calculating method created by Hang Young Pai and Sung Jin Pai. Staeker goes through the basics of the system, specifically how simple math can be done by finger counting, and how a corpo…
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Laughing Squid broke the news in on Friday, July 25, 2025.
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