The questions in this quiz are suitable for GCSE maths students studying real-life graphs, distance-time and displacement-time graphs, speed-time and velocity-time graphs, instantaneous rates of ...

Sometimes a new scientific idea can be like the punch line of a very long joke: You need to keep the whole setup in mind to appreciate the humor, but it's worth the effort. There's a fledgling idea ...

In 1950 Edward Nelson, then a student at the University of Chicago, asked the kind of deceptively simple question that can give mathematicians fits for decades. Imagine, he said, a graph — a ...