Math Teachers at Play #21 via Math Mama Writes
The math carnival is posted and ready for your browsing pleasure:
Puzzlers, riddlers, thinkers, doers, novices, experts, come one , come all! First off, in honor of the number 21, is a puzzle, fresh from the oven.
The Numberland News runs personal ads. 21 was looking for a new friend and put an ad in…
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