Plus.Maths.org
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 half a minute: Exponential growth 
What do we mean when we say that something grows exponentially? Find out in this very easy introduction, suitable for anyone curious to know more!
Maths in a minute: Odds ratios 
Is your new face cream associated to getting spots? The odds ratio can help figure it out.
Maths in a minute: Mathematical models 
A basic introduction to the most powerful tools in science and engineering.
Maths in a minute: Algorithms 
The word "algorithm" has probably got more usage over the last few years than it has in its entire history. But what exactly is an algorithm?
Maths in a minute: Exponential growth 
What do we mean when we say that something grows exponentially?
Maths in a minute: Conditional probability 
Find out why the formula we use to work out conditional probabilities is true!
Maths in a minute: Non-linearity 
Non-linear relationships are tricky relationships. Find out why here.
Maths in a minute: Homotopy 
The concept of homotopy is a great example of how the language of maths can make intuition precise.
Maths in a minute: Peano arithmetic 
How would you explain the natural numbers to an alien devoid of a number instinct? You could try Peano arithmetic...
Maths in a minute: Thermodynamics 
Tea gone cold? Don't worry, you can cheer yourself up with the theory of thermodynamics.