Bradley Emerling is Principal Research Scientist at Pearson Research and Innovation Network. This commentary appeared in Teachers College Record on April 13, 2015. Last winter, while observing and recording classroom lessons for a research project in Japan, I was surprised to hear a sound I had not heard for many years—the sound of chalk. Over…
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Why were chalkboards replaced with whiteboards? - Quora
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Lessons Learned from a Chalkboard: Slow and Steady Technology
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