The Math Club

A close call on the Math Club holodeck sends Pete and Noah down a wormhole investigating Kaprekar's Constant. Beam aboard as we explore strange new algorithms and boldly discover what happens when numbers are put through this interesting iterative process. Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode What is Kaprekar's constant and how does the Kaprekar process work for four-digit numbers? What is the maximum number of steps required for any valid four-digit number to reach Kaprekar's constant?

A friend's story leads Pete and Noah to dive into the high-stakes world of poker to settle a debate: does a flush really beat a straight? Using the tools of combinatorics and probability, our hosts break down the math behind five-card hands and explore how the hierarchy of the game is built upon the frequency of outcomes. Ante up... the next hand is about to begin! Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode How do you calculate the total number of possible five-card poker hands from a 52-card deck? What are the mathematical odds of being dealt a flush versus a straight in poker?

In this episode, veteran educator Sheila Robitaille joins Pete and Noah to discuss World Math Day, a global competition for students ages 5 to 18 that promotes mathematical fluency through 60-second "live Mathletics" games. The conversation highlights the 2026 theme, "United by Numbers," exploring how gamification can foster a growth mindset and make math fun and engaging for kids at all levels of math proficiency. Register your child or students for World Math Day 2026 Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • What is World Math Day and who is eligible to participate in the competition? • How does the gamification of mathematics help students develop a growth mindset and academic perseverance?

Ever wonder how a website knows your credit card number is "invalid" before you even hit the submit button? In this commando-style holiday episode, Pete and Noah dive into the secrets of Luhn's Algorithm, a clever approach that uses simple arithmetic to validate sequences of digits. Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • How does the Luhn algorithm work to validate credit card numbers? • Why do credit card companies use a checksum digit?

Hey there Math Club. Our most recent episode, Math Club Junior: It's a Zoo Out There, was our second special episode made specifically for kids. When Noah was planning how he wanted to use the episode with his own third grade class, he knew that some visuals would come in handy, so he created a slide deck with images to go along with each problem that the students will have to solve. If you'd like to use this resource along with the audio, you can find it by going to: https://bit.ly/mcj_zoo We hope you find these images to be fun and helpful, and we'll see you next time!

A family visit to the Netherlands introduces Pete to the idea of average speed zones, which illustrate a particularly interesting mathematical theorem. Join our hosts as they really go off on a tangent about the mean value theorem, and how it just might get you a speeding ticket. Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • What is an average speed zone and how does it work to catch speeding drivers? • What is the Mean Value Theorem and how does it relate average rates of change to instantaneous rates of change?

Join us for part two of our deep dive into the history of Fermat's Last Theorem. In this episode, Pete and Noah focus on the fascinating story of Sophie Germain, a 19th century French mathematician who pursued a proof in the face of overwhelming obstacles. Come learn about this impressive chapter in the saga of one of the most interesting problems in mathematical history. Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • What work did Sophie Germain do to advance the proof of Fermat's Last Theorem? • Why is it sufficient to prove Fermat's Last Theorem only for prime exponents?

In this episode, Pete and Noah are joined by Andy Looney, the creator of the card game Fluxx, to talk about Math Fluxx and his history designing games. Whether you're a math person who loves a good game or a game person who loves to do math, we're sure you'll find Andy and his story to be interestingly enjoyable. Game on! Looney Labs Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • What is Math Fluxx and how do you play it? • How did Andy Looney come up with Math Fluxx and other Fluxx games?

It's the holiday season, and Pete and Noah are getting into the festive spirit by looking at the math behind a favorite Hannukah game. Join our hosts as they delve into the probabilities of the dreidel and uncover a counterintuitive truth about its fairness. Whatever traditions you and your family look forward to at this time of year, we promise a lively and interesting time as we take this topic for a spin. Seasons Greetings! • Robert Feinerman's paper, An Ancient Unfair Game Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • Why is the game of dreidel mathematically unfair, and which player has the statistical advantage? • How do the different possible outcomes of each dreidel spin affect the expected value of the pot for each player?

Have you heard the big news? There's a new largest known prime number, and Noah wants to know how it was discovered. In this episode, Pete explains the various tests used to determine the primality of insanely large numbers, and there's even a prime challenge for you to sink your teeth into. Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • How are new prime numbers discovered? • What are Mersenne primes and how are they calculated?

The memory of a restaurant-choosing game from grad school inspires Pete and Noah to look at different voting systems, and the math behind how they work to select a winning candidate. From standard majority rules to ranked choice to plurality with elimination, join our hosts for a lively (and timely) conversation about how our voting system can be just as important as our vote. Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • What is the Borda count method and how is it used in ranked choice voting? • How does plurality with elimination redistribute votes to determine a winner?

Hey Math Club... Pete and Noah need your help with a data mystery, so they put this mini-episode together. If you think you have any info that can help shed some light, drop us a line... Leave us a voice message DM us on Twitter Send us an email

Pete's efforts to help Noah prepare for an upcoming math competition lead to a conversation with Kristen Chandler, the executive director of MATHCOUNTS. Join Pete and Noah as they learn about this fascinating organization that provides engaging math programs to middle school students around the country. MATHCOUNTS website Email Kristen Chandler Leave us a voice message Find us on Twitter Send us an email Questions Answered in the Episode: • What are the MATHCOUNTS Competition and the MATHCOUNTS National Math Club programs like? • How does the MATHCOUNTS competition structure work across school, chapter, state, and national levels?