Senior Sessions

Once a week
2:00 pm to 2:45 pm ET

(online)

Senior citizens, exercise your brain in 45-minute math sessions!  Join MoMath’s experienced presenters for intriguing classes on a variety of stimulating topics, including topology, puzzles, and cryptography.  Enjoy the discovery and challenges in these engaging, interactive activities with a collegial cohort of mature minds.  Online registration closes 15 minutes before each session begins.

Please note that sessions of the same name are repeated sessions.

“Math in the Corner Pocket”

Wednesday, March 25
Explore angles and the law of reflection while tracing the path of a billiard ball as it bounces off the walls of a pool table.  Use patterns to discover a simple method to predict in which pocket the ball will land and learn how to prove that your prediction is correct.  Game on!  Materials needed: pencil, ruler, and graph paper (printout available).

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Play like a Mathematician: Hex

Thursday, April 2
An engaging, abstract strategy game, Hex was invented by mathematician and poet Piet Hein in 1942, rediscovered in 1948 by the mathematician John Nash, and popularized by Martin Gardner in 1957.  The game is often played on Hex boards, but it can also be played on a floor that has hexagonal tiles!  Join us for an online version and discover a winning strategy for this fun and challenging game.  Materials needed: familiarity with the “Annotate” feature in Zoom is recommended.  Printouts of Hex boards (during the session).

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“Number Puzzles”

Tuesday, April 7
Using paper, pencil, and basic arithmetic, have fun while solving number puzzles and discovering how elegant solutions often hide in unexpected places.  No advanced math required — just curiosity and a willingness to experiment!  Materials needed: pencil and paper.

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Math in Art: Friezes”

Wednesday, April 15
Continuing in our Math in Art series is an introduction to mathematical symmetry and the seven patterns of friezes.  Known for their decorative purposes and often enriched with carvings, these architectural elements have been known and used since antiquity.  Materials needed: pencil, paper, colored pencils or markers (optional), and printouts to be provided.

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“Chessboards and Dominoes”

Thursday, April 23
What shapes can you fit together to cover a chessboard?  Dominoes?  Trominoes?  Learn about mathematical proofs while exploring patterns of odd and even numbers and experimenting with real dominoes and chessboards.  Materials needed: pencil and graph paper (printout available).  Optional materials: chessboard, dominoes

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“Gallery of Graphs”

Tuesday, April 28
Dig into graph theory by exploring the connection between vertices and edges — and the walls of any house.  Discover a method to determine whether a ghost can haunt a castle or if a figure can be drawn without lifting the pen.  Explore how these two problems are related and learn what they have to do with bridges in 18th-century Prussia, all while enjoying a unique and accessible introduction to this sophisticated branch of mathematics.  Materials needed: pencil, paper, and colored pens or markers (4 colors).

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“Skipping Towards Infinity”

Wednesday, May 6
Is it possible to add infinitely many things and end up with a single finite number?  Sometimes, but the arithmetic of infinity obeys its own strange rules.  Achilles and the Tortoise never quite mastered them!  Explore this classic paradox and other surprising results that arise when considering the mathematics of infinity.  Materials needed: pencil, paper (at least 3 sheets of 8.5 x 11 paper), and calculator (optional).

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Math in Art: Tessellations”

Thursday, May 14
Discover the wonderful world of tessellations!  Explore how geometric shapes can completely cover a plane with no gaps or overlaps and discover where tessellations appear: in nature, in ancient Roman mosaics, in Islamic art and architecture, in quilting patterns, and in the works of modern artists such as M.C. Escher.  Join us to build your own tessellations with regular polygons in this first offering in the Math in Art series.   Materials needed: pencil, paper, scissors, and printout to be provided.

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“Drawing the Line: The Math Behind Gerrymandering”

Tuesday, May 19
In this interactive session, you will step into the role of a legislator and discover how gerrymandering — the manipulation of district boundaries — can determine the outcome of an election before a single vote is cast. Explore the tactics of “packing,” “cracking,” the meaning of “wasted votes,” and their impact on the fairness of our elections.  Materials needed: paper, pencil, colored pens (or markers), and printout to be provided.

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“Hands and Minds”

Wednesday, May 27
Through two entertaining and intriguing mathematical puzzles, learn about knot theory, recursive algorithms, and proofs of induction.  Have fun while challenging not only your mind but also your hands!  Materials needed: scissors, glue or tape, 3 sheets of colored paper (different colors), plus a printout to be provided.

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“Polyomino Puzzlers”

Thursday, June 4
You’ve heard of dominoes, but have you ever heard of trominoes, tetrominoes, or pentominoes?  Discover the many surprising shapes you can create simply by combining single-size squares and explore various types of symmetry using these unique objects.  Materials needed: printout to be provided, pencil, and colored pen (or marker). Optional materials: scissors and tape.

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Play like a Mathematician: Game, SET, Math”

Tuesday, June 9
Based on set theory and combinatorics, SET is a fast-paced card game where players race to identify sets of three cards that follow specific rules.  Join us to play a few rounds of SET where, in order to win, you will be challenged to recognize many fun patterns!  Materials needed: SET card game (optional).

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“Connect the Dots”

Wednesday, June 17
Explore surprising connections between geometry and arithmetic.  Using a simple dot-connecting game, discover how divisibility determines emerging shapes — triangles, stars, hexagons, and more!  Discover colorful patterns and ideas for creating string art.  Materials needed: pencil, paper, and printouts to be provided.

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“Rep-tiles”

Thursday, June 25
Come discover mathematical rep-tiles, geometric shapes that can tile into repetitions of themselves.  Learn about scaling, special tessellations, and mathematical proofs, while solving fun rep-tiles puzzles.  Materials needed: pencil, paper, printouts to be provided, and scissors (to cut out shapes prior to session)

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This program is intended for adults; children will not be permitted to attend, and event registrations are non-refundable and non-transferrable.