There's no doubt about it: mazes make your brain work harder and better. But what if kids think mazes are for babies--or just plain boring? Tell them to think again, because their best challenges start right NOW. Challenging… books are perfect for kids who like to kick things up a notch. The only question is…are they up to the test? Encourage them to say yes, and they'll enjoy hours of stimulating fun. Their challenge, should they choose to accept it, is to get to the end of each maze--in record time! Every maze starts easy and gets harder, with time challenges to see if kids can beat the best of the rest.