Two circles of equal size intersect and the centre of each circle is on the circumference of the other. What is the area of the intersection? Now imagine that the diagram represents two spheres of. . . .

Can you sketch these difficult curves, which have uses in mathematical modelling?

This is our collection of tasks on the mathematical theme of 'Population Dynamics' for advanced students and those interested in mathematical modelling.

Explore the properties of this different sort of differential equation.

First in our series of problems on population dynamics for advanced students.

Second in our series of problems on population dynamics for advanced students.

Consider these analogies for helping to understand key concepts in calculus.

Get started with calculus by exploring the connections between the sign of a curve and the sign of its gradient.

An advanced mathematical exploration supporting our series of articles on population dynamics for advanced students.

Fifth in our series of problems on population dynamics for advanced students.

An advanced mathematical exploration supporting our series of articles on population dynamics for advanced students.

Make a functional window display which will both satisfy the manager and make sense to the shoppers

Sixth in our series of problems on population dynamics for advanced students.

How would you sort out these integrals?

Fourth in our series of problems on population dynamics for advanced students.

Third in our series of problems on population dynamics for advanced students.

Find the relationship between the locations of points of inflection, maxima and minima of functions.

Can you find the maximum value of the curve defined by this expression?

Fractional calculus is a generalisation of ordinary calculus where you can differentiate n times when n is not a whole number.

Here explore some ideas of how the definitions and methods of calculus change if you integrate or differentiate n times when n is not a whole number.

You can differentiate and integrate n times but what if n is not a whole number? This generalisation of calculus was introduced and discussed on askNRICH by some school students.

Can you hit the target functions using a set of input functions and a little calculus and algebra?

What functions can you make using the function machines RECIPROCAL and PRODUCT and the operator machines DIFF and INT?

Show without recourse to any calculating aid that 7^{1/2} + 7^{1/3} + 7^{1/4} < 7 and 4^{1/2} + 4^{1/3} + 4^{1/4} > 4 . Sketch the graph of f(x) = x^{1/2} + x^{1/3} + x^{1/4} -x

Mathmo is a revision tool for post-16 mathematics. It's great installed as a smartphone app, but it works well in pads and desktops and notebooks too. Give yourself a mathematical workout!

Can you find a quadratic equation which passes close to these points?

Give your further pure mathematics skills a workout with this interactive and reusable set of activities.