With support from the National Science Foundation, graduate students have developed a collection of more than 40 mathematics modules that cover a wide variety of topics accessible to middle- and high-school students. We implement one or two of these modules on the Cornell campus each semester in what we call the “Math Explorers' Club.” The goal of the Math Explorers' Club is to introduce new mathematical concepts and problem solving strategies to grades 8-12 students who will, in turn, communicate their new knowledge in public forums (i.e., through posters and/or presentations).  For more information go to https://math.cornell.edu/math-explorers-club-grades-8-12-%E2%80%94-recent-offerings.  The MEC is part of Math Department Outreach.