Mind-Blowing Modular Origami : The Art of Polyhedral Paper Folding: Use Origami Math to fold Complex, Innovative Geometric Origami Models Fold the coolest shapes and structures out of nothing but squares of colored paper. Modular origami is a rad, meditative, 'mathemagical' skill for kids and adults. (This book may contain a sharpie mark on the top or bottom edge and may show mild signs of shelf wear.)