Maths in a minute

Want facts and want them fast? Our Maths in a minute series explores key mathematical concepts in just a few words. From symmetry to Euclid's axioms, and from binary numbers to the prosecutor's fallacy, learn some maths without too much effort.

Maths in a minute: Modular arithmetic
Count around the clock.
Maths in three minutes: Groups
butterlies
Capturing symmetry with algebra.
Maths in a minute: What's average?
Why the humble average can be grossly misleading.
Maths in a minute: Writing infinite sums
How to write a sum that's infinitely long.
Maths in a minute: Euclid's fourth axiom
Euclid's fourth axiom says that all right angles are equal. But isn't that obvious?
Maths in a minute: Euclid's axioms
Five basic facts from the father of geometry.
Maths in a minute: Why do mathematicians play games?
chess pieces
Why game theory is a serious business.
Maths in a minute: Adding fractions (the easy way)
The Indian way of adding fractions makes things easier (with musical explanation).
Maths in a minute: Watch your units!
How to lose a spacecraft in the most embarrassing way possible.
Maths in a minute: Binary numbers
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How do you write numbers as string of 0s and 1s?
Maths in a minute: Perfect numbers
Of numbers, beauty and bizarre animals.
Maths in a minute: Osculating the curve…
We are very pleased with our new toy demonstrating the curvature of any smooth function – now you can try it out too!