History of Educational Tools and Technology
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HISTORY OF EDUCATIONAL
TOOLS AND TECHNOLOGY
By: Anna Yarbrough
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THE ABACUS The abacus was
invented in Babylon in 2400 B.C.
This invention was the first calculator.
http://www.mandarintools.com/abacus.html
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HOMING PIGEONS These pigeons were
used to deliver messages to other cities, houses, etc.
The Homing Pigeons were used during 776 B.C.
http://www.homingpigeon.com/
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FOOT AND HORSE BACK MESSENGERS
These messengers were fairly common in Egypt and China.
These messengers were here during 200 B.C.- 100 B.C.
http://www.2-clicks-stamps.com/article/postal-services-history-and-origins.html
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ERASERS PUT ON PENCILS The Eberhard Company
was the one to produce the first pencils with erasers on the end.
This came to be in 1756
www.nyc.gov/html/lpc/downloads/pdf/reports/Eberhard_Faber.pdf
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SEMAPHORE TELEGRAPH LINE
This invention was invent by Claude Chappe in 1793.
http://www.ieeeghn.org/wiki/images/1/17/Dilhac.pdf
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