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Article: This abacus really adds up.(Grades 3-8)(Brief article)
- Article from:
- Curriculum Review
- Article date:
- December 1, 2006
CopyrightCOPYRIGHT 2006 PaperClip Communications. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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"The Romans often used an abacus--a counter--to do arithmetic problems," notes Rachel Dickinson in Tools of the Ancient Romans: A Kid's Guide to the History & Science of Life in Ancient Rome (Nomad Press, ages 9 and up, $14.95, nomadpress.net; available in bookstores nationwide). Here's how to build one in a snap:
Supplies: foam board (about 1/2 inch thick), tape, glue, ruler, X-ACTO knife, bamboo skewers, 60 craft beads in two colors (30 beads each), pen, and scissors.
1. Cut a rectangle from the foam board that measures 13 by 9 inches. Use your X-ACTO knife with caution.
2. Cut six strips of foam board--each 1 by 9 inches.
3. Glue ...