The Little Giant Book of Brain Twisters by Sheila Barry
Get smart - give your brain a super-sized workout that's fun, challenging, and mind-expanding! You'll really have to keep your wits about you as you tackle six big sections filled with puzzles and tricks of every sort, from the visual to the verbal. - Try critical thinking and lateral thinking questions, where you'll have to "work outside the box," forget your assumptions, and look at the problem from a fresh viewpoint. - Whodunits have all the pleasures of a mystery--but you're the detective trying to figure it out! - Be "number one" at mathematical conundrums. - Open your eyes and look sharp when you tackle the picture puzzles and optical illusions.