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Chalkboards are used in the classroom.
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Pencils and paper are now mass-produced and replacing the slate in schools.
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Use of the over-head projector spreads to schools.
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Schools begin to incorporate headsets and audio tapes.
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Educational television programs begin to be broadcast, and there are over 50 channels with educational programming during the 1960s.
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The hand-held calculator comes into existence.
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There was approximately one computer for every 92 students in the United States.
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The original whiteboard was reinvented now with a touch screen, projector, and computer.
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The clicker is in existence.
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The iPad, basically the new advanced version of a personal chalkboard in the past, is invented.
