A directory of useful objects found on the web for teaching Maths.
https://www.youtube.com/watch?v=IPoh5C9CcI8
Activity, Problem, Publisher, Numberphile, Video, YouTube
A problem is presented to take distinct integers such that as many pair sums as possible are powers of two.
See also the “stop-press” where further work has been done on the problem.
10 October 2022 Edit: 10 October 2022
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