Where should runners start the 200m race so that they have all run the same distance by the finish?

Could nanotechnology be used to see if an artery is blocked? Or is this just science fiction?

Examine these estimates. Do they sound about right?

Get some practice using big and small numbers in chemistry.

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

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

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

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

Work out the numerical values for these physical quantities.

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

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

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

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

Is it cheaper to cook a meal from scratch or to buy a ready meal? What difference does the number of people you're cooking for make?

Explore the relationship between resistance and temperature

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

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

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

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

Two trains set off at the same time from each end of a single straight railway line. A very fast bee starts off in front of the first train and flies continuously back and forth between the. . . .

To investigate the relationship between the distance the ruler drops and the time taken, we need to do some mathematical modelling...

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

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

Which dilutions can you make using only 10ml pipettes?

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

Use trigonometry to determine whether solar eclipses on earth can be perfect.

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?

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

Which units would you choose best to fit these situations?

How would you go about estimating populations of dolphins?

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

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

These Olympic quantities have been jumbled up! Can you put them back together again?

Which countries have the most naturally athletic populations?

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

Can you visualise whether these nets fold up into 3D shapes? Watch the videos each time to see if you were correct.

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

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

Imagine different shaped vessels being filled. Can you work out what the graphs of the water level should look like?

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

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