Repeated subtraction is visualized several times in this tale about two greedy tribes, the Woggles and the Droks, and their fight over a fabulous diamond. Part of "Math That Counts" series.
Encyclopedia Britannica, 331 N. LaSalle St., Chicago, IL 60610, Phone: (312)347-7159, Toll-free: 800-323-1229, Fax: (312)294-2104, URL: http://www.britannica.com
Available on VHS
Running time 10 minutes.
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