Seeing is believing

Can your eyes deceive you? Try these amazing optical illusions to find out. Look hard, then look again to see spinning patterns (but the page isn't moving!), colors that change (but do they?), big and small shapes (spot the difference!), and lots more. Devised by an expert on brain training, these visual tricks and challenges are huge fun and quite an eye-opener! There are handy tips if you need help, plus an answer key at the back!.