Contains over one hundred problems in which reasoning is required to reach the answer, ranging from easy to relatively difficult. Includes solutions.

For centuries, logic puzzles have entertained, inspired and educated kids of all ages. Studies show these engaging "brain teasers" provide unsurpassed benefits to the body and mind, increasing manual dexterity, mathematical abilities and overall intellectual agility. Crafting Wood Logic Puzzles provides plans and instructions for crafting 18 of the most popular manual puzzles. Projects range from traditional "put together/take apart" games like pentominoes and soma cubes to more sophisticated "unlocking" head-scratchers, such as the Burr and Heart Box puzzles. Readers will also learn specialized cutting, drilling, sanding, gluing and finishing techniques that make crafting wooden puzzles possible.

The noted expert selects 70 of his favorite "short" puzzles, including such mind-bogglers as The Returning Explorer, The Mutilated Chessboard, Scrambled Box Tops, and dozens more involving logic and basic math. Solutions included.

Karen is back with more lateral thinking puzzles and riddles! The difficulty level of these puzzles varies, but no matter how difficult you may find them to be, there is always an answer. Even if you answer the puzzle incorrectly, you may find it fun to explain why your answer could be correct as well. These are also great to use for a game night with friends and family. Quiz them to see how much they know. You never know what kind of answers you may get. All of these puzzles are lateral thinking puzzles-meaning you won't need a calculator nor pen and paper. All you need is your brain. The puzzles may be short or long, but they give you just enough information to figure out the answer. Make sure you don't over analyze them; otherwise, you may end up missing the answer all together.

Get your brain working with 200 grid-based logic puzzles from the Puzzle Baron! Filled with complex and fun brain teasers that range in difficulty, this book will put your mind into overdrive with hours of brain-challenging fun. Using the given backstory and list of clues, readers use pure logic to deduce the correct answer for each fiendishly tricky puzzle in Puzzle Baron's Logic Puzzles. Bring out your competitive side and check your stats against the average completion time, the record completion time, and the percentage of people who finish the puzzle. Check your work against the answer key and see how logical you really are! Perfect for adults or children, Puzzle Baron's Logic Puzzles is the ultimate challenge for those who love piecing clues and facts together. The brain is a wonderful thing to tease!

This lucid introductory text offers both an analytic and an axiomatic approach to plane projective geometry. The analytic treatment builds and expands upon students' familiarity with elementary plane analytic geometry and provides a well-motivated approach to projective geometry. Subsequent chapters explore Euclidean and non-Euclidean geometry as specializations of the projective plane, revealing the existence of an infinite number of geometries, each Euclidean in nature but characterized by a different set of distance- and angle-measurement formulas. Outstanding pedagogical features include worked-through examples, introductions and summaries for each topic, and numerous theorems, proofs, and exercises that reinforce each chapter's precepts. Two helpful indexes conclude the text, along with answers to all odd-numbered exercises. In addition to its value to undergraduate students of mathematics, computer science, and secondary mathematics education, this volume provides an excellent reference for computer science professionals.

Bizarre imagination, originality, trickiness, and whimsy characterize puzzles of Sam Loyd, America's greatest puzzler. Present selection from fabulously rare Cyclopedia includes the famous 14–15 puzzles, the Horse of a Different Color, and 115 others in various areas of elementary math. 150 period line drawings.

Learn to open your mind and unlock your natural abilities to solve all kinds of real-life conundrums with this programme designed to improve your lateral thinking, from bestselling brain-training and puzzle book author Gareth Moore.

Perfect for sudoku fans—the rules for these 100 logic puzzles are simple, and the math is easy. But the puzzles get harder and harder! Once you match wits with area mazes, you’ll be hooked! Your quest is to navigate a network of rectangles to find a missing value. Just Remember: Area = length × width Use spatial reasoning to find helpful relationships Whole numbers are all you need. You can always get the answer without using fractions! Originally invented for gifted students, area mazes (menseki meiro), have taken all of Japan by storm. Are you a sudoku fanatic? Do you play brain games to stay sharp? Did you love geometry . . . or would you like to finally show it who’s boss? Feed your brain some area mazes—they could be just what you’re craving!