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Plus Advent Calendar Door #8: The Königsberg movie
One of our favourite maths problems in movie form.
Plus Advent Calendar Door #7: A gaping hole
Can you cut up an old playing card to make a hole big enough to walk through?
Plus Advent Calendar Door #6: Guarding a gallery
How many guards to you need to supervise an art gallery?
Plus Advent Calendar Door #3: Throwing shapes
If you want to draw a rhombus on dotty paper, can you start with any two dots?
Plus Advent Calendar Door #4: Origami fractions
How to fold exact fractions without guessing or fiddling.
Plus Advent Calendar Door #2: Shake to solve
How shaking hands with people in two different ways leads to a mathematical proof.
Plus Advent Calendar Door #1: Feeding the meter
Find out how an annoying parking metre can get your creative juices flowing!
Playing with numbers
Here's a game: pick a positive natural number and if yours is the smallest number no one else has picked, you win. What's the best strategy?
Middle class problems
A famous question involving networks appears to have come closer to an answer.