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1 Jan 1841 Jahr - Classroom Chalkboards

Beschreibung:

While classroom chalkboards were introduced in 1841, it was not until the end of the 1800's that they were included in all schools. Horace Mann was a major advocate.

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ByKate Belt
24 Okt 2018
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1 Jan 1841 Jahr
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~ 184 years ago
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