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Peer reviewedBarnes, Sue; Michalowicz, Karen Dee – Mathematics Teaching in the Middle School, 1994
Discusses the changes in the scanning of food and the current use of computer technology and UPC bar codes in a grocery store and traces the history of calculating tools from the use of fingers, abacus, slide rule, calculators, and computers. Includes reproducible student activity sheets. (MKR)
Descriptors: Computers, Educational Technology, Elementary School Mathematics, Elementary Secondary Education
