Don't think too hard or you'll never solve these logic puzzles and riddles. The answers to all 187 are easy once you catch the tricky wording. How can you tie a

60-Second Brain Teasers Pencil-Free Puzzles contains 201 no-pencil-required brain twisters that take one minute or less. These completely original puzzles range

There's nothing better than a tricky brain teaser to test your intellect and satisfy your quest for mental challenge. The search ends with this colossal assortm

Solve history's greatest puzzles with this classic collection of brain teasers from The Best Brain Teasers of All Time. The best brain teasers are those that ha

Nearly 200 "quickie" classroom activities and reproducible worksheets to develop the thinking, reasoning and memory skills of elementary students and help them