Senior Sessions

Twice a week (weekdays)
2:00 pm to 2:45 pm ET (New York) (through June)
3:00 pm to 3:45 pm ET (New York) (July and August)

Seniors 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.  For senior citizens / mature adults.

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

Senior Sessions: “Hailstone Numbers”
Monday, June 21, 2:00 pm to 2:45 pm ET (New York)
Hail is formed when ice repeatedly travels up and down within a cloud, growing and shrinking until its mass is steady enough to fall to the ground as hail.  Hailstone numbers are repeated patterns of numbers with the same property.  They increase and decrease sporadically according to a set rule until they finally plummet in size and eventually become the number 1.  These number sequences are easy to create but often impossible to fully understand.  Come learn what these numbers are, why they are so mystifying, and how they might just represent the next big breakthrough in mathematics.  Materials needed: pencil and paper.

Register for “Hailstone Numbers” on June 21

Senior Sessions: “Möbius Mischief”
Thursday, June 24, 2:00 pm to 2:45 pm ET (New York)
Participants construct fascinating topological objects such as Möbius bands, discovering their fundamental patterns and structures.  Hands-on activities lead participants to discover the surprising properties hidden in these surfaces!  Materials needed: 4 strips of paper (2 inches by 11 inches), scissors, tape, and two different colored pens (or pencils or markers).

Register for “Möbius Mischief” on June 24

Senior Sessions: “Vote Counts: Ranking and Tanking”
Tuesday, June 29, 2:00 pm to 2:45 pm ET (New York)
Voting for a preference may seem simple, but when multiple options exist, the math gets complicated!  The different methods of counting the vote can often result in different winners.  Explore the mathematics behind various vote-counting systems and develop a deeper understanding of what it means for a system to be equitable.  Materials needed: pencil and paper.

Register for “Vote Counts: Ranking and Tanking” on June 29

Senior Sessions: “Polyomino Puzzlers”
Friday, July 2, 3:00 pm to 3:45 pm ET (New York)
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.  Explore various types of symmetry using these unique objects. Materials needed: printout to be provided, pencil, and colored pen (or marker).  Optional materials: scissors, tape.

Register for “Polyomino Puzzlers” on July 2

Senior Sessions: “Cryptarithmetic”
Tuesday, July 6, 3:00 pm to 3:45 pm ET (New York)
Arithmetic is fun, but arithmetic with letters is even better!  Using process of elimination and clever logic, we will explore fundamental properties of base-10 arithmetic in a unique and challenging way.  Join us for CRYPT4R1THM3T1C!  Materials needed: pencil and paper.

Register for “Cryptarithmetic” on July 6

Senior Sessions: “Sensational Puzzles”
Friday, July 9, 3:00 pm to 3:45 pm ET (New York)
Explore mathematical puzzles that grabbed the headlines!  Learn to solve spectacular and controversial puzzles using logic, probability, and basic graph theory.  Develop puzzle-solving strategies while diving into these news-making mathematical conundrums.  Materials needed: pencil and paper.

Register for “Sensational Puzzles” on July 9

Senior Sessions: “Exhibit Explorations: Pythagorean Puzzlers”
Monday, July 12, 3:00 pm to 3:45 pm ET (New York)
The Pythagorean theorem is one of the most important results in all of mathematics.  There are more than 120 geometric proofs currently known!  Explore geometric proofs in this hands-on workshop based on MoMath’s Time Tables puzzler.  Materials needed: pencil, paper, colored pens (or pencils/markers), ruler, scissors, and graph paper (printout to be provided)

Register for “Exhibit Explorations: Pythagorean Puzzlers” on July 12

Senior Sessions: “Topological Tic-Tac-Toe”
Thursday, July 15, 3:00 pm to 3:45 pm ET (New York)
The familiar game of tic-tac-toe becomes fun and challenging when played on alternative topological surfaces.  The typical 3×3 game board is enhanced by gluing pairs of opposite edges together in various ways, making for more interesting games and mind-bending playing spaces.  Participants learn to appreciate the ins and outs of these new objects as they develop strategies to master the mathematically enhanced games.   Materials needed: pencil and paper.

Register for “Topological Tic-Tac-Toe” on July 15

Senior Sessions: “Making Math Solid: Tetrahedron”
Tuesday, July 20, 3:00 pm to 3:45 pm ET (New York)
Explore geometry and discover the beautiful structure of polyhedra!  Using modular origami techniques that involve folding multiple sheets of paper, each participant will create their own tetrahedron.  Making Math Solid is a series that focuses on different polyhedra, highlighting their fascinating properties.  Materials needed: 6 to 10 sheets of origami paper or 6 to 10 paper squares (6 inches by 6 inches).

Register for “Making Math Solid: Tetrahedron” on July 20

Senior Sessions: “Exhibit Explorations: Math Square
Friday, July 23, 3:00 pm to 3:45 pm ET (New York)
The interactive Math Square floor is the centerpiece of the Museum’s lower level, and among its varying programs is a Voronoi diagram, which creates colorful polygons under the visitors’ feet.  Learn exciting details about the Museum exhibit and also how to make your very own Voronoi diagram.  Materials needed: pencil, paper, colored pens (or pencils/markers), and triangle ruler (optional) or ruler.

Register for “Exhibit Explorations: Math Square” on July 23

Senior Sessions: “Math in the Corner Pocket”
Monday, July 26, 3:00 pm to 3:45 pm ET (New York)
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 your prediction is correct.  Game on!  Materials needed: pencil, ruler, graph paper (printout to be provided).

Register for “Math in the Corner Pocket” on July 26

Senior Sessions: “Breaking Codes”
Thursday, July 29, 3:00 pm to 3:45 pm ET (New York)
How do computers keep your passwords secret?  How do websites safeguard your credit card numbers?  Explore multiplicative ciphers, broken codes, and prime numbers, while encoding and decoding your own secret messages.  Learn how cryptography helps protect your private information.  Materials needed: pencil and paper.  Optional materials: calculator.

Register for “Breaking Codes” on July 29

Senior Sessions: “Vote Counts: Ranking and Tanking”
Tuesday, August 3, 3:00 pm to 3:45 pm ET (New York)
Voting for a preference may seem simple, but when multiple options exist, the math gets complicated!  The different methods of counting the vote can often result in different winners.  Explore the mathematics behind various vote-counting systems and develop a deeper understanding of what it means for a system to be equitable.  Materials needed: pencil and paper.

Register for “Vote Counts: Ranking and Tanking” on August 3 

Senior Sessions: “Dynamic Dice”
Friday, August 6, 3:00 pm to 3:45 pm ET (New York)
What is the probability of rolling a given sum with a pair of standard dice?  Explore how to determine that probability and then challenge yourself to find a different way to number the dice to get the very same probabilities.  Come roll the dice!  Materials needed: pencil and paper.

Register for “Dynamic Dice” on August 6 

Senior Sessions: “Rep-tiles”
Monday, August 9, 3:00 pm to 3:45 pm ET (New York)
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).

Register for “Rep-tiles” on August 9 

Senior Sessions: “Vote Counts: Packing and Cracking”
Thursday, August 12, 3:00 pm to 3:45 pm ET (New York)
Get a glimpse into the mathematics of elections by becoming a “legislator” for a day.  Explore how election districts are drawn, including “packing,” “cracking,” and the meaning of wasted votes, in order to analyze the fairness of representation in an election.  Materials needed: pencil, paper, colored pens (or markers), and printout to be provided.

Register for “Vote Counts: Packing and Cracking” on August 12 

Senior Sessions: “Fractal Fascinations”
Tuesday, August 17, 3:00 pm to 3:45 pm ET (New York)
Fractals are beautiful and mysterious objects with properties that defy the normal rules of geometry, often consisting of iterated, miniature versions of itself.  Learn about the most famous fractals and what makes them so unusual.  Materials needed: pencil and paper.

Register for “Fractal Fascinations” on August 17 

Senior Sessions: “Making Math Solid: Hexahedron”
Friday, August 20, 3:00 pm to 3:45 pm ET (New York)
Explore geometry and discover the beautiful structure of polyhedra!  Using modular origami techniques that involve folding multiple sheets of paper, each participant will create their own hexahedron.  Making Math Solid is a series that focuses on different polyhedra, highlighting their fascinating properties.  Materials needed: 6 to 10 sheets of origami paper or 6 to 10 paper squares (6 inches by 6 inches).

Register for “Making Math Solid: Hexahedron” on August 20

Senior Sessions: “Vote Counts: Tower of Power”
Monday, August 23, 3:00 pm to 3:45 pm ET (New York)
Explore the different ways power can be distributed in weighted voting systems.  These systems are those in which different groups have different amounts of votes, such as county delegations, government committees, and even the United States Electoral College.  Should the largest populations have the most power?  Should smaller groups have a voice?  Answering these questions is far more complex than simple majority rule, but modern mathematical analysis provides a useful lens through which to analyze unbalanced voting power.  (Please note: This is the third installment of the Vote Counts series; it is not necessary to have attended the other two.)  Materials needed: pencil and paper.

Register for “Vote Counts: Tower of Power” on August 23 

Senior Sessions: “Making Math Solid: Octahedron”
Thursday, August 26, 3:00 pm to 3:45 pm ET (New York)
Explore geometry and discover the beautiful structure of polyhedra!  Using modular origami techniques that involve folding multiple sheets of paper, each participant will create their own octahedron.  Making Math Solid is a series that focuses on different polyhedra, highlighting their fascinating properties.  Materials needed: 6 to 10 sheets of origami paper or 6 to 10 paper squares (6 inches by 6 inches).

Register for “Making Math Solid: Octahedron” on August 26

Senior Sessions: “Chessboards and Dominoes”
Tuesday, August 31, 3:00 pm to 3:45 pm ET (New York)
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, paper, and printout to be provided.  Optional materials: chessboard, dominoes.

Register for “Chessboards and Dominoes” on August 31

Please note that program fees are non-refundable.  This program is for adults; MoMath reserves the right to remove children from a session without refund.

Share the gift of math!  Gift registrations for Senior Sessions available at mathgift.momath.org.