This book comes with all the plastic pieces, paper parts, and special pages you need to experience 25 impossible things. These objects work like magic, but there are no tricks. All this weirdness has a solid scientific basis and we tell you why - from the mathematically amazing M'bius strip (a band of paper with only one side), to cardstock acrobats with amazing balance, to a color changing spinning top. Comes with: wobblestone, hinged mirror, plastic animation sheet, a variety of custom-designed cardstock curiosities (crazy arrow, acrobats, 3D dinosaur, spinning top and patterns, multidimensional labyrinth)