The Mechanics of Arithmetic
The mechanics of arithmetic, an arithmetic chart to teach elementary math. The chart used familiar objects, to kids in America where farming was still a major occupation, to demonstrate math
Picture No
10800964
Media ID
47598522
Size
2877px x 4329px
(4.8MB)
Credit
©Photo Researchers / Mary Evans Picture Library
Source
Photo Researchers
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Restrictions Only for Ireland and United Kingdom
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