Not only is this incredible kit packed with more than 100 mind-boggling illusions, it also explains the science behind them. Kids will love learning how the brain tricks the eye into seeing what may - or may not - actually be there. This fun and unusual pack comes complete with lots of cool accessories to help with the illusions including: 3D glasses, a thaumatrope (for animated illusions), a press-out impossible triangle, plus acetate sheets and spinners for creating vibrating lines and other illusions.