nmahmain copy 39088020680419 Purchased from the NMAH Library Endowment. How ed tech was born: Twentieth-century teaching machines-from Sidney Pressey's mechanized test-giver to B. F. Skinner's ...
From the 1920s American psychologists experimented with teaching using machines. Inspired, in part, by the expansion of schooling, especially at the secondary level; the success of paper-and-pencil ...
To its 5,000 salesmen across the U.S., Grolier Inc., publisher of America’s oldest encyclopedia, last week handed out an odd-looking new product to sell door to door. A green, windowed, sheet-metal ...
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