Explorez tous les épisodes du podcast Maths for Kids / Maths is Not Boring: The Kids Maths Podcast

Imagine a whole universe completely flat like a piece of paper! There is no "up" and no "down"—just forwards, backwards, left, and right. In 1884, a headmaster named Edwin Abbott Abbott wrote a mind-bending story called Flatland about this exact idea! The people living in Flatland are flat shapes: triangles, circles, and a very confused square. Because they are totally flat, they can only ever see each other's edges as straight lines! But what happens when a solid, 3D sphere from our world visits Flatland? To the square, it looks like pure magic! A tiny dot appears out of nowhere, grows into a giant circle, shrinks, and then completely vanishes as the ball passes straight through the paper! The sphere even has to pull the square out of his universe to show him what "up" really means! Join Mira and Finn as they explore this incredible story and uncover a massive mathematical secret. Discover how scientists use Flatland to imagine a mind-blowing fourth dimension and learn what the shadow of a 4D tesseract looks like! Get ready to look at the universe in a completely different way!

Did you know there are definitely two people in London right now with the EXACT same number of hairs on their heads? And nobody even had to count them to figure it out! This mind-bending math magic is called the Pigeonhole Principle. It is super simple: imagine you have four sleepy pigeons, but only three wooden boxes for them to sleep in. No matter what, at least one pigeon is going to have to share a box! That simple idea is actually a mathematical superpower, perfected by a German mathematician named Peter Gustav Lejeune Dirichlet in 1834 (though people in France were using it for hair puzzles way back in 1622!). Join Mira and Finn as they use this awesome rule to uncover amazing hidden secrets about the world. Find out why any group of 13 people MUST have two people with the same birthday month, why pulling five playing cards always gives you a matching suit, and how this idea even works for counting leaves on trees! Get ready for a mathematical adventure!

Imagine you are standing on a brightly lit game show stage! Three colorful doors are in front of you. Behind one is a shiny new car, but behind the other two... are live, chewing goats! You pick a door. Suddenly, the host opens a different door to reveal a goat! He smiles and asks: "Do you want to stick with your first choice, or switch?" What would you do? Most people think it’s a fifty-fifty chance and doesn't matter, but they are WRONG! In 1990, a puzzle genius named Marilyn vos Savant wrote that switching actually doubles your chances of winning! When she shared this secret, thousands of people—even math professors—wrote angry letters telling her she was making a huge mistake! But guess what? She was completely right! Even the brilliant mathematician Paul Erdős didn't believe it until he saw a computer play the game thousands of times. Tune in to find out how a simple clue can completely change your chances, and learn the mind-bending math secret behind the famous Monty Hall problem!

Imagine a totally blank map of the world. Now, imagine you have to paint every single country, but no two touching countries can be the same color! How many colors would you need? You might think you'd need dozens, but here is a giant math secret: you only ever need FOUR! Join Mira and Finn on Maths is Not Boring as they explore the mind-bending Four Colour Theorem! It all started in 1852 when a student named Francis Guthrie noticed a strange pattern while coloring a map of England. Little did he know, he had stumbled onto a mystery that would stump the world's smartest mathematicians for 124 years! Discover the thrilling story of a brilliant math proof that everyone believed for eleven years before a tiny mistake was found hidden inside it. Then, fast forward to 1976 to see how a giant, room-sized supercomputer finally solved the ultimate map puzzle! But wait... did the machine's answer actually count as a real math proof? Tune in to uncover the wild history of maps, giant computers, and a beautiful mystery you can test with just four crayons!

Imagine trying to go for a sunny Sunday walk, only to discover the path is mathematically impossible! In 1735, the beautiful city of Königsberg had two huge islands sitting right in the middle of a wide river, connected to the rest of the town by exactly seven bridges. The townspeople made up a massive puzzle: could anyone walk across all seven bridges exactly once without ever crossing the same one twice? People tried for years, wandering around and tracing maps, but everyone got stuck! It wasn't because they were bad at directions—it was because of math! A brilliant young mathematician named Leonhard Euler decided to solve the mystery. Instead of walking the bridges himself, he erased the entire city from his map and replaced the land and bridges with simple dots and lines. By inventing the world's very first mathematical network, he proved the famous walk couldn't be done! Join Mira and Finn on Maths is Not Boring as they uncover how Euler’s amazing join-the-dots trick gave us the amazing graph theory used to power map apps and the entire internet today!

Can you fold a normal piece of paper enough times to reach the Moon? It sounds completely impossible, but if you could fold a single sheet of paper just 42 times, the stack would explode past the clouds, past the satellites, and crash right into the Moon! How? It is all thanks to a math superpower called exponential growth! In this mind-blowing episode, Mira and Finn uncover how doubling something over and over makes it grow faster than you can even imagine. You will hear the incredible true story of a California high schooler who smashed a world record by folding a massive, 4,000-foot piece of tissue paper 12 times in a shopping mall! Plus, discover an ancient legend about a tricky chessboard, a greedy king, and a pile of rice bigger than Mount Everest. We will even dive into a sneaky riddle about a pond full of lily pads that will totally trick your brain! Get ready to have your mind blown by the magic of doubling!

Have you ever tried to count... absolutely nothing? For thousands of years, humans counted sheep, gold coins, and days, but they had absolutely no number for zero! If you had three apples and ate them all, you just had an empty hand. But as math got more complicated, people realized they needed a way to hold empty spaces open so numbers like 15 wouldn't accidentally get mixed up with 105! Ancient civilizations like the Babylonians and the Maya invented clever placeholders to fix this—the Maya even used a beautifully carved picture of an empty seashell! But it wasn't until the year 628 CE in India that a brilliant mathematician named Brahmagupta gave zero its very own superpowers. He figured out that zero wasn't just a blank space; it was a real number with magical rules! If you add it, nothing changes, but if you multiply by it, everything vanishes! Poof! Join Mira and Finn as they trace the incredible journey of zero from ancient India to Europe with the help of a man named Fibonacci. Discover how the invention of nothing completely changed the world!

Have you ever looked closely at a snowflake landing on your mitten and wondered why it looks like a perfect little star? Join Mira and Finn as they uncover the amazing, invisible rules of the universe! In this mind-bending episode, you will discover the magical math of symmetry—the reason why spinning a snowflake, flipping a butterfly's wing, or sliding a honeycomb leaves them looking exactly the same! But symmetry isn't just a cool trick of shapes. You will travel back in time to 1915 to meet Emmy Noether, a brilliant mathematician who solved a massive puzzle that even stumped Albert Einstein. She proved that every time you see symmetry in nature, the universe is actually hiding a secret law of physics! From water molecules shaped like tiny Mickey Mouse heads freezing into perfect hexagons, to bouncing balls traveling forward in time, get ready to see the world in a whole new way. Math has never been this beautiful!

Have you ever seen a shape with only one side? It sounds completely impossible, right? Everything in the world has a top and a bottom, or an inside and an outside! But in 1858, a German mathematician named August Ferdinand Möbius discovered a shape that breaks all the rules! By taking a simple strip of paper, giving it a single half-twist, and taping the ends together, he created the mind-bending Möbius strip! If a tiny ant walked along this loop, it would travel over the entire surface and end up exactly where it started without ever crossing an edge! This single twist opened the door to a wild new kind of maths called topology, where shapes can stretch and bend—meaning a doughnut and a coffee mug count as the exact same shape! The coolest part? Möbius strips are hiding everywhere in our everyday world! You can find them in the twisting arrows of the recycling symbol, heavy-duty factory conveyor belts, and even wild upside-down roller coasters! Join Mira and Finn as they explore how one little twist can completely change the universe!

Did you know there are "rebel numbers" hiding in the world right now that absolutely refuse to follow the rules?! Welcome to the wild, mind-bending world of prime numbers! A prime number is a special number that can only be divided evenly by itself and the number one—like 2, 3, 5, 7, and 11. They are the unbreakable building blocks of mathematics! Over two thousand years ago, a brilliant mathematician named Euclid proved an amazing secret: prime numbers never, ever run out. They go on for infinity! But here is the craziest part: nobody knows the pattern of where the next one will appear! In October 2024, computers found the largest known prime number, and it is so gigantic it has over 41 million digits! Today, we use these massive, unbreakable numbers as secret digital padlocks to keep our phone messages completely safe. Even insects use them! Discover how mysterious 13-year and 17-year cicadas use prime numbers to outsmart hungry predators in the wild. Join Mira and Finn as we unlock the greatest unsolved mystery in mathematics!

Have you ever played a game of cards like Go Fish or Snap? What if I told you that every time you shuffle a brand new deck of 52 cards, you are holding a tiny piece of history that has almost certainly never existed before in the universe?! It sounds like magic, but it is actually the incredible maths of permutations! Join Mira and Finn as they explore how ordinary playing cards can be ordered in more ways than there are atoms in our entire Milky Way galaxy. That is a massive number with 68 digits! We will also travel back to 1992 to meet a real-life magician-turned-mathematician named Persi Diaconis. He and his partner Dave Bayer proved that it takes exactly seven "riffle shuffles" to completely and perfectly mix up a pack of cards. You will learn how a giant, invisible factory of numbers makes possible combinations explode faster than you can count. Get ready to have your mind totally blown—the next time you shuffle a deck of cards, you will be holding a brand new, totally unique pattern right in the palms of your hands!

Have you ever tried counting as high as you possibly can? What happens if you never stop adding one? You get to infinity! But wait... did you know that forever actually comes in different sizes?! It sounds impossible, but it is completely true! Join Mira and Finn on a mind-bending adventure to the 1870s to meet a brilliant mathematician named Georg Cantor. He shocked the entire world by proving that some endless things are actually bigger than other endless things! We will explore a giant, glittering hall to see how numbers pair up perfectly, and check into the amazing Hilbert's Hotel—a massive, endless building that is always completely full, yet somehow always has room for one more guest! Even though people laughed at Cantor's bizarre discoveries, he proved that infinity isn't just out in deep space. It is hiding right inside your pencil case! Get ready to stretch your brain and discover why a tiny, one-inch pencil line holds more points than there are counting numbers in the universe. Tune in and find out why math is definitely not boring!

Have you ever wondered if someone in your classroom shares your exact birthday? It feels like it would take hundreds of kids to find a match, right? Well, get ready to have your mind blown! In this episode, Mira and Finn uncover the amazing mathematical secret known as the Birthday Paradox! It turns out, if you put just twenty-three people in a room, it is more likely than not that two of them will share a birthday. How can that be true when there are 365 days in a year?! We will learn how brilliant mathematician Richard von Mises published this incredible puzzle in 1939. You will discover why our brains trick us into counting individual people instead of invisible pairs, and how the number of chances explodes super fast! A room of 23 people actually makes 253 unique pairs! We will even find out how a football pitch has exactly 23 people on it at kickoff, and how computers use this exact same maths to keep your passwords safe online. Join us to find out how coincidences that feel like absolute magic are really just hidden chances!

Did you know that every single circle in the universe is hiding a secret, endless number? Join Mira and Finn on Maths is Not Boring as they uncover the wild and wondrous mystery of Pi! Whether it is a tiny coin in your pocket, a spinning bicycle wheel, or a giant planet floating in space, every circle shares the exact same mathematical magic. Travel all the way back to ancient Greece to meet a clever mathematician named Archimedes, who figured out how to trap this tricky number just by drawing shapes in the sand! But here is the most mind-bending part: the digits of Pi go on forever and ever without repeating. From 3.14 to over one hundred trillion digits discovered by modern supercomputers, this incredible number simply never stops! Discover why Pi isn't just in kitchen plates and clocks, but also in ripples on a pond and the spinning orbits of the stars. You will never look at a circle the same way again!