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11 Old-Fashioned Tricks Kids Today Are Not Taught In School That Would Save Them A Lot Of Time

One of the most common old-fashioned tricks kids today are not taught in school that would save them a lot of time is the ...
PNAS

Polyhedra and packings from hyperbolic honeycombs

Edited by Robion C. Kirby, University of California, Berkeley, CA, and approved May 25, 2018 (received for review November 29, 2017) ...