In this short problem, try to find the location of the roots of some unusual functions by finding where they change sign.

Which of these infinitely deep vessels will eventually full up?

How would you go about estimating populations of dolphins?

Use vectors and matrices to explore the symmetries of crystals.

See how enormously large quantities can cancel out to give a good approximation to the factorial function.

Explore the shape of a square after it is transformed by the action of a matrix.

Explore the properties of matrix transformations with these 10 stimulating questions.

Explore the meaning of the scalar and vector cross products and see how the two are related.

Can you make matrices which will fix one lucky vector and crush another to zero?

Starting with two basic vector steps, which destinations can you reach on a vector walk?

Analyse these beautiful biological images and attempt to rank them in size order.

Work with numbers big and small to estimate and calulate various quantities in biological contexts.

Go on a vector walk and determine which points on the walk are closest to the origin.

Match the descriptions of physical processes to these differential equations.

Match the charts of these functions to the charts of their integrals.

Work with numbers big and small to estimate and calculate various quantities in biological contexts.

10 graphs of experimental data are given. Can you use a spreadsheet to find algebraic graphs which match them closely, and thus discover the formulae most likely to govern the underlying processes?

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

Invent scenarios which would give rise to these probability density functions.

How do you choose your planting levels to minimise the total loss at harvest time?

Can you construct a cubic equation with a certain distance between its turning points?

Was it possible that this dangerous driving penalty was issued in error?

The probability that a passenger books a flight and does not turn up is 0.05. For an aeroplane with 400 seats how many tickets can be sold so that only 1% of flights are over-booked?

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

In Fill Me Up we invited you to sketch graphs as vessels are filled with water. Can you work out the equations of the graphs?

Explore the relationship between resistance and temperature

This problem explores the biology behind Rudolph's glowing red nose.

An observer is on top of a lighthouse. How far from the foot of the lighthouse is the horizon that the observer can see?

Why MUST these statistical statements probably be at least a little bit wrong?

Find the distance of the shortest air route at an altitude of 6000 metres between London and Cape Town given the latitudes and longitudes. A simple application of scalar products of vectors.

Here are several equations from real life. Can you work out which measurements are possible from each equation?

Work with numbers big and small to estimate and calculate various quantities in physical contexts.

Explore the possibilities for reaction rates versus concentrations with this non-linear differential equation

Get further into power series using the fascinating Bessel's equation.

Are these statistical statements sometimes, always or never true? Or it is impossible to say?

Each week a company produces X units and sells p per cent of its stock. How should the company plan its warehouse space?

By exploring the concept of scale invariance, find the probability that a random piece of real data begins with a 1.

Build up the concept of the Taylor series

Formulate and investigate a simple mathematical model for the design of a table mat.

Shows that Pythagoras for Spherical Triangles reduces to Pythagoras's Theorem in the plane when the triangles are small relative to the radius of the sphere.

Can you suggest a curve to fit some experimental data? Can you work out where the data might have come from?

Can you work out which processes are represented by the graphs?