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1by Christian Greiffenhagen“.... This paper explores how writing mathematics (on paper, blackboards, or even in the air) is indispensable...”
Published 2014
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2“..., and proofs on the blackboard (often reproducing word-by-word what is distributed in advance in lecture notes...”
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4by Christian Greiffenhagen“...’ blackboard suggest that interactive whiteboards should not only be seen as a presentational device...”
Published 2004
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