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Borchelt, Nathan. (2020). Good Things Come in Unexpected Packages. In S. Kohli (Ed.), Math Circle Activity Database. American Institute of Mathematics.

Good Things Come in Unexpected Packages

Math Circles:
“When my son opened his Christmas cracker, he discovered ‘The Mystery Calculator,’ a little two-player card game. Of course, I was intrigued and offered to exchange my fake mustache for his game. Little did I know where this gem of a gift would take me.” Exploring the math behind the Mystery Calculator leads to a low-setup, high-fun activity! This session is also suitable for student circles or the classroom.

Activity Guide

This guide looks at the activity in detail and provides a follow-up game.