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

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

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

Which units would you choose best to fit these situations?

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

Get some practice using big and small numbers in chemistry.

How would you go about estimating populations of dolphins?

Work out the numerical values for these physical quantities.

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.

Examine these estimates. Do they sound about right?

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

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

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?

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?

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

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

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

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

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

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

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

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

Which dilutions can you make using only 10ml pipettes?

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

Explore the relationship between resistance and temperature

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

The design technology curriculum requires students to be able to represent 3-dimensional objects on paper. This article introduces some of the mathematical ideas which underlie such methods.

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?

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

Can you work out which processes 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?

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. . . .

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.

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

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

Is it really greener to go on the bus, or to buy local?

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

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

Is there a temperature at which Celsius and Fahrenheit readings are the same?

Various solids are lowered into a beaker of water. How does the water level rise in each case?

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