A set of 45 riddles that can be answered by using a calculator.

Rhyming anecdotes present opportunities for simple math activities and hints for solving.

Have fun with games, terrific tricks, and ridiculous riddles. Who knew math could be so much fun?

Designed to enhance proficiency in using a hand-held calculator to solve riddles and mathematical challenges.

The twenty-seventh Bathroom Reader in the beloved, bizarre trivia series with more than fifteen million copies in print! At a whopping 544 pages, Uncle John’s Canoramic Bathroom Reader is overflowing with everything that Bathroom Readers’ Institute fans have come to expect from this bestselling trivia series: fascinating history, silly science, obscure origins . . . plus fads, blunders, wordplay, quotes, and a few surprises (such as some of the “creative” methods people have used to pay off their alimony). And yes, Uncle John’s latest masterpiece is guaranteed to keep you on the edge of your can! So hang on tight as you read about . . . • Hairy superstitions • Animals who act like people • The Mother of the Father of our Country • Really BIG Things • Eugene Vidocq—the world’s first private eye • Bill Gates and his “Toilet Challenge” • Unclassified: The story of the Freedom of Information Act • How to behave like a gentleman . . . 16th century style • Great Gushers: The world’s most incredible oil strikes • Who’s the Suzette in Crepe Suzette? • Happy Sewerage Day! And much, much more!

This deck, from acclaimed Puzzlemaster Will Shortz, crossword puzzle editor for the New York Times and regular guest on NPR's Weekend Edition Sunday, are packed with 75 brainteasers and mindbenders, each designed to challenge puzzlers of all stripes. A perfect gift for puzzle enthusiasts of all ages who want to test their brainpower while standing in line, commuting to work, or hanging out with friends.

Ask a friend to pick a random number, add this, subtract that-and presto, astound your friend by guessing the new number! Math riddles, mental math tricks, magic squares, brain teasers, geometry puzzlers, amazing math facts, money math, calculator math, math competitions, and more fill this book of reproducible handouts with challenging, fun math-related problems. Grades 4-6. Answer key. Illustrated.

Math will never be the same again-and you'll love it! Fun tricks, calculator conundrums, brainteasters and other numerical hoaxes will challenge every inch of your brain in the most satisfying way. There are even riddles to get you giggling. Amaze your friends with your psychic powers when you predict the outcome of the "7-11" card trick. Figure out how to cut a pepperoni pizza using only 3 straight lines-and still have a piece of pepperoni on each slice. Solve a series of pencil puzzles...without ever lifting the pencil from the paper. Build a house with 11 toothpicks; then move just one to make the building face the opposite direction. Comical illustrations add to the enjoyment. So sharpen a pencil, get a piece of paper, and start on these mathematical mysteries right away!

This book shows you how to teach national math standards with literature-based make-and-take projects. Suggestions for illustrating math concepts with children's literature are included for each activity.