Marc is a retired public school math teacher and now a part-time private school math teacher and tutor. He is a graduate of U.C. Berkeley where he also did his teacher training. He is a veteran speaker at math conferences for teachers and also teaches math circles for teachers and students. He is an amateur mathematician and enjoys writing innovative curriculum materials.

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Andrea Guevara-Castro

60 Stone Pine Road, Suite 201
Half Moon Bay, CA 94019

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