These amazing puzzles--hundreds of them--will keep children involved for hours! Each one offers plenty of optical fun, plus an engaging mental challenge. Some of the pictorial conundrums involve figuring out relative size (the length of an astronaut and his shadow, for example). Others present "impossible" structures, including a very strange house and a unique sculpture. Or young solvers can try to pinpoint the differences between two very similar images; stare at a wavy pattern to see if it will eventually make them seasick; or watch a leprechaun turn into a sumo wrestler in front of their very eyes. With so much variety, they'll never be bored!