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Book, 2020
Current format, Book, 2020, Available .
Book, 2020
Current format, Book, 2020, Available . Offered in 0 more formats
"A decade ago, James Lang banned cell phones in his classroom. Frustrated by how easily they could sidetrack his students, Lang sought out a distraction-free environment, hoping it would help his students pay attention to his lessons. But after just a few years, Lang gave in. Not only was his no-cellphones policy…
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