Crypto Mind Benders® develop mathematical reasoning and critical thinking skills vital to academic and lifelong success. They are perfect for introducing children to encryption, algebraic thinking, and basic computer programming operations. Children learn to break a secret code so they can identify a hidden joke or quotation. To break the code, children must apply logic and mathematical reasoning to three sets of clues. The challenge is getting all the information out of each clue and to solve the cryptogram by substituting the numbers with their corresponding code letters. Quotations of famous thinkers such as Albert Einstein, and classic, good-humored, jokes are used to build deductive thinking skills taught in the award-winning Mind Benders® series without the use of word problems. Perfect for school, home, and travel, they are popular as brain jump-start, extra credit, or reward activities. These exercises are also great for adult cognitive maintenance.