HISTORY OF EDUCATIONAL

TOOLS AND TECHNOLOGY

By: Anna Yarbrough

THE ABACUS The abacus was

invented in Babylon in 2400 B.C.

This invention was the first calculator.

http://www.mandarintools.com/abacus.html

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/

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

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

SEMAPHORE TELEGRAPH LINE

This invention was invent by Claude Chappe in 1793.

http://www.ieeeghn.org/wiki/images/1/17/Dilhac.pdf