Andy wants to cycle from Land's End to John o'Groats. Will he be able to eat enough to keep him going?

Have you ever wondered what it would be like to race against Usain Bolt?

Use the computer to model an epidemic. Try out public health policies to control the spread of the epidemic, to minimise the number of sick days and deaths.

How do you write a computer program that creates the illusion of stretching elastic bands between pegs of a Geoboard? The answer contains some surprising mathematics.

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?

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

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

Can you deduce which Olympic athletics events are represented by the graphs?

Can Jo make a gym bag for her trainers from the piece of fabric she has?

What shape would fit your pens and pencils best? How can you make it?

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

Investigate circuits and record your findings in this simple introduction to truth tables and logic.

Examine these estimates. Do they sound about right?

Which dilutions can you make using only 10ml pipettes?

Can you sketch graphs to show how the height of water changes in different containers as they are filled?

Make your own pinhole camera for safe observation of the sun, and find out how it works.

Learn about the link between logical arguments and electronic circuits. Investigate the logical connectives by making and testing your own circuits and fill in the blanks in truth tables to record. . . .

In which Olympic event does a human travel fastest? Decide which events to include in your Alternative Record Book.

Simple models which help us to investigate how epidemics grow and die out.

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?

Get some practice using big and small numbers in chemistry.

What shapes should Elly cut out to make a witch's hat? How can she make a taller hat?

If I don't have the size of cake tin specified in my recipe, will the size I do have be OK?

How would you design the tiering of seats in a stadium so that all spectators have a good view?

Make an accurate diagram of the solar system and explore the concept of a grand conjunction.

Water freezes at 0°Celsius (32°Fahrenheit) and boils at 100°C (212°Fahrenheit). Is there a temperature at which Celsius and Fahrenheit readings are the same?

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

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

How would you go about estimating populations of dolphins?

Which units would you choose best to fit these situations?

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

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

When you change the units, do the numbers get bigger or smaller?

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

Use your skill and knowledge to place various scientific lengths in order of size. Can you judge the length of objects with sizes ranging from 1 Angstrom to 1 million km with no wrong attempts?

Many physical constants are only known to a certain accuracy. Explore the numerical error bounds in the mass of water and its constituents.

Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?

Estimate these curious quantities sufficiently accurately that you can rank them in order of size

Work out the numerical values for these physical quantities.

Can you draw the height-time chart as this complicated vessel fills with water?