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Jeff (JJ) Calhoun, Modules Team Leader of Prison Math Project, high school math educator, and current math teacher at Temple Grandin School. Jeff fell in love with mathematics while deployed in Afghanistan and went on to study math at Colorado College. Jeff is an active volunteer with Focus Reentry, a nonprofit whose focus is setting up incarcerated folks for success as they transition, and spends one night a week at Boulder County Jail facilitating Math Circles learning groups.


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