January 15 of the Mystery Year is the birthday of Martin Luther King. Math clues for finding the year require students to graph ordered pairs in four quadrants and perform all four operations with integers. The letters formed by the graph, when unscrambled, spell out a word quite relevant to Dr. King. Your download includes these pages for print or digital activities:3-page digital version with horizontal layout, prepped for Easel 2-page printable version (in main file plus a separate file, read