Which parts of these framework bridges are in tension and which parts are in compression?
Work with numbers big and small to estimate and calculate various quantities in biological contexts.
Given the equation for the path followed by the back wheel of a bike, can you solve to find the equation followed by the front wheel?
Dip your toe into the fascinating topic of genetics. From Mendel's theories to some cutting edge experimental techniques, this article gives an insight into some of the processes underlying. . . .
Work out the numerical values for these physical quantities.
See how enormously large quantities can cancel out to give a good approximation to the factorial function.
Have you got the Mach knack? Discover the mathematics behind exceeding the sound barrier.
Get further into power series using the fascinating Bessel's equation.
By exploring the concept of scale invariance, find the probability that a random piece of real data begins with a 1.
Look at the advanced way of viewing sin and cos through their power series.
An article demonstrating mathematically how various physical modelling assumptions affect the solution to the seemingly simple problem of the projectile.
How much energy has gone into warming the planet?
Can you deduce why common salt isn't NaCl_2?
Work with numbers big and small to estimate and calculate various quantities in physical contexts.
Get some practice using big and small numbers in chemistry.
Formulate and investigate a simple mathematical model for the design of a table mat.
Read all about electromagnetism in our interactive article.
Read about the mathematics behind the measuring devices used in quantitative chemistry
Ever wondered what it would be like to vaporise a diamond? Find out inside...
An introduction to a useful tool to check the validity of an equation.
Unearth the beautiful mathematics of symmetry whilst investigating the properties of crystal lattices
We all know that smoking poses a long term health risk and has the potential to cause cancer. But what actually happens when you light up a cigarette, place it to your mouth, take a tidal breath. . . .
Explore the power of aeroplanes, spaceships and horses.
Explore the properties of this different sort of differential equation.
Build up the concept of the Taylor series
Is the age of this very old man statistically believable?
Investigate x to the power n plus 1 over x to the power n when x plus 1 over x equals 1.
All types of mathematical problems serve a useful purpose in mathematics teaching, but different types of problem will achieve different learning objectives. In generalmore open-ended problems have. . . .
When is a knot invertible ?
How much peel does an apple have?
This article (the first of two) contains ideas for investigations. Space-time, the curvature of space and topology are introduced with some fascinating problems to explore.
Two polygons fit together so that the exterior angle at each end of their shared side is 81 degrees. If both shapes now have to be regular could the angle still be 81 degrees?
An introduction to bond angle geometry.
Use trigonometry to determine whether solar eclipses on earth can be perfect.
Two perpendicular lines lie across each other and the end points are joined to form a quadrilateral. Eight ratios are defined, three are given but five need to be found.
Where we follow twizzles to places that no number has been before.
Can you find some Pythagorean Triples where the two smaller numbers differ by 1?
We think this 3x3 version of the game is often harder than the 5x5 version. Do you agree? If so, why do you think that might be?
How fast would you have to throw a ball upwards so that it would never land?
A simplified account of special relativity and the twins paradox.
Looking at small values of functions. Motivating the existence of the Taylor expansion.
Explore the properties of combinations of trig functions in this open investigation.
What functions can you make using the function machines RECIPROCAL and PRODUCT and the operator machines DIFF and INT?
What's the chance of a pair of lists of numbers having sample correlation exactly equal to zero?
Some of our more advanced investigations
Investigate constructible images which contain rational areas.
Is it really greener to go on the bus, or to buy local?
In a snooker game the brown ball was on the lip of the pocket but it could not be hit directly as the black ball was in the way. How could it be potted by playing the white ball off a cushion?
Could nanotechnology be used to see if an artery is blocked? Or is this just science fiction?
Where should runners start the 200m race so that they have all run the same distance by the finish?