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12. Magic Squares
October 12, 2018
Since ancient times, magic squares have given endless hours of fun through designing grids of numbers where each row, column, and diagonal produces the same sum  as if by magic. In this last lesson, learn to create magic squares quickly from numbers provided by your amazed audience or based on your volunteer's birthday. Finally, end the course with a magic matrix based on the number pi.
11. Geometric and Topological Magic
October 12, 2018
Explore mathematical mysteries that seem geometrically or topologically odd. Consider a paper strip with a half twist, joined endtoend, known as a Möbius band. What happens when there are more twists or if the shape is cut? Create an analogous shape by slicing a bagel. Also, solve puzzles with disappearing figures, including a rabbit.
10. Look like a Psychic
October 12, 2018
Hone your psychic powers by developing tricks such as these: Have someone scramble their birthday in a seemingly unbreakable code, which you decipher with ease. Calculate the hidden spots on a stack of dice. Use the parity principle to guess where your partner has landed in an alphabetic array. Also learn the magician's "toxic" calculation principle.
9. The Magic of Nine
October 12, 2018
Admire the magic of the number nine. An ancient technique called "casting out nines" lets you pick out the missing digit in a bewilderingly long series of operations. Then learn to determine twodigit cube roots and also find the age of a volunteer who has hidden the number in a complicated calculation  all with the help of the number nine.
8. Look like a Genius
October 12, 2018
You don't have to be a genius to look like one. Drawing on young volunteers, Professor Benjamin shows easy strategies for mentally multiplying numbers by 11, dividing numbers by 91, multiplying any numbers near 100, squaring numbers ending in 5, and other seemingly fearless feats of arithmetic, without use of a calculator.
7. Magic with Numbers
October 12, 2018
Master an impressive medley of numberguessing tricks, involving the golden ratio, the Fibonacci series, and other notable numbers. In analyzing how the tricks work, discover how straightforward algebraic expressions are secretly pulling the strings. The feats include the very first mathematical magic trick that Professor Benjamin learned.
6. Riffle Shuffles
October 12, 2018
Explore results of an ordinary riffle shuffle, where the deck is cut roughly in half, and the cards are interlaced approximately  but usually not perfectly. Depending on how the cards are arranged beforehand, intriguing effects are possible, based on Gilbreath's principle of patterned sequences. Study several of these magic showpieces.
5. Perfect Shuffles
October 12, 2018
Professor Benjamin introduces a special guest, mathematician and magician Brent Morris, master of the perfect shuffle (also known as the faro shuffle), in which two equal halves of the deck are interlaced perfectly. You will learn two versions of this virtuoso technique  the inshuffle and outshuffle  along with sequences of shuffles that lead to very interesting symmetries.
4. The Deck Is Stacked
October 12, 2018
Investigate tricks based on the cyclic method of card ordering, or "stacking," popularized by magician Si Stebbins and tracing originally to one of the first books on magic, published in Italy in 1593. Learn how to seemingly weigh a deck of cards in your hands and other miraculous feats based on this simple principle.
3. Look like a Card Shark
October 12, 2018
Professor Benjamin shows how to play cards like someone who would be thrown out of a casino. Learn the Jonah principle for always winning at poker. Get a "feel" for counting cards and develop the knack for telepathically communicating a hidden card to an assistant. Finally, who could claim to be a card shark without a trick that turns up four aces every time?
2. What's Your Deal?
October 12, 2018
Explore card tricks in which the cards are shuffled, dealt, and flipped over in interesting ways, leading to surprising outcomes. Discover Hummer's principle  an endless source of mystifying, crowdpleasing tricks, based on random mixing of cards combined with a simple procedure that preserves a pattern that seems positively magical.
1. Mathematical Card Tricks
October 12, 2018
Begin the course with card tricks in which mathematics is clearly being used, but the secret is not easy to figure out. Learn the invariant principle: Some qualities stay the same in a deck even though the order of cards is changing. End with what Professor Benjamin calls the "tearable" trick, being careful to use cards that you don't mind wrecking. #Science & Mathematics
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Where to Watch Math and Magic
Math and Magic is available for streaming on the The Great Courses Signature Collection website, both individual episodes and full seasons. You can also watch Math and Magic on demand at Amazon Prime, Amazon and The Roku Channel.
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Premiere DateOctober 12, 2018