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An Abacus is a simple device for calculating, which consists of a frame with rows of wires.
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Filmstrips projected still images on an advancing piece of film.
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A public broadcast of different educational programmes, for example: "Sesame Street" and "Mister Rogers Neighborhood"
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These were micro computers - this meant that they were 'stand alone' and 'non-networked'.
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Radio became a vital link to information and had the power to influence people’s opinions in a way that had never been seen before.
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Chalkboards allowed teachers to share information to the whole class - though they had to erase it and start over when they ran out of space.
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Text books were developed after the printing press in the 1500's.
