"To help promote parent-child interaction, COA together with agency Cramer-Krasselt set up large puzzles, word searches, mazes, books, rulers and more around the streets of Milwaukee, US, in year 2011. Called “guerrilla classrooms,” the displays were designed to teach real-world applications on various subjects like math, science, geography and reading. The ultimate goal? To raise awareness of the positive impact parents’ involvement can have on their child’s education"