When number pyramids have a sequence on the bottom layer, some interesting patterns emerge...

Sets of integers like 3, 4, 5 are called Pythagorean Triples, because they could be the lengths of the sides of a right-angled triangle. Can you find any more?

How would you judge a competition to draw a freehand square?

A weekly challenge concerning prime numbers.

A function pyramid is a structure where each entry in the pyramid is determined by the two entries below it. Can you figure out how the pyramid is generated?

A weekly challenge concerning the interpretation of an algorithm to determine the day on which you were born.

A selection of intriguing questions to consider on mechanics, particularly surrounding the ideas concerning impulse and momentum.

Can you massage the parameters of these curves to make them match as closely as possible?

Can you find the differential equations giving rise to these famous solutions?

Josh clearly explained how to calculate the radius of a running track and the position of the staggered starts for the 200m and 400m races.

Here we look back at the year with NRICH and suggest mathematical summer holiday activities for students, parents and teachers.