Articles and Handouts Below please find a number of articles and handouts written by Michael. Articles Tic-Tac-Toe, 2006Pi Day Problem, 2009Designing A Coffee Table, 2009Eartha Diggs and the Ancient Stone Arch Mystery, 2009 Handouts Cool Investigations in Geometry, 2011Developing Mathematical Reasoning with Games and Puzzles, 2012Happy Birthday Martin Gardner, 2014Tricks of the Trade, 2014One's Good But More’s Better, 2016A Term Project: Creating a Geometry Cathedral, 2009