Filter by: Content type: ALL Problems Articles Games Stage: All Stage 1&2 Stage 2&3 Stage 3&4 Stage 4&5 Challenge level:
If I don't have the size of cake tin specified in my recipe, will the size I do have be OK?
Explore the properties of isometric drawings.
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?
Can you sketch graphs to show how the height of water changes in different containers as they are filled?
Analyse these beautiful biological images and attempt to rank them in size order.
Examine these estimates. Do they sound about right?
Could nanotechnology be used to see if an artery is blocked? Or is this just science fiction?
Is it really greener to go on the bus, or to buy local?
Invent a scoring system for a 'guess the weight' competition.
To investigate the relationship between the distance the ruler drops and the time taken, we need to do some mathematical modelling...
Can you work out what this procedure is doing?
Can you work out which drink has the stronger flavour?
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. . . .
Where should runners start the 200m race so that they have all run the same distance by the finish?
When a habitat changes, what happens to the food chain?
What shape would fit your pens and pencils best? How can you make it?
How would you go about estimating populations of dolphins?
Make your own pinhole camera for safe observation of the sun, and find out how it works.
Work with numbers big and small to estimate and calulate various quantities in biological contexts.
These Olympic quantities have been jumbled up! Can you put them back together again?
Can you deduce which Olympic athletics events are represented by the graphs?
Are these estimates of physical quantities accurate?
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?
Get some practice using big and small numbers in chemistry.
Make an accurate diagram of the solar system and explore the concept of a grand conjunction.
Which dilutions can you make using only 10ml pipettes?
Work with numbers big and small to estimate and calculate various quantities in physical contexts.
The triathlon is a physically gruelling challenge. Can you work out which athlete burnt the most calories?
In which Olympic event does a human travel fastest? Decide which events to include in your Alternative Record Book.
Explore the relationship between resistance and temperature
Work with numbers big and small to estimate and calculate various quantities in biological contexts.
Explore the properties of perspective drawing.
Formulate and investigate a simple mathematical model for the design of a table mat.
Which units would you choose best to fit these situations?
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
Work out the numerical values for these physical quantities.
How much energy has gone into warming the planet?
Practice your skills of measurement and estimation using this interactive measurement tool based around fascinating images from biology.
Many physical constants are only known to a certain accuracy. Explore the numerical error bounds in the mass of water and its constituents.
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.
How would you design the tiering of seats in a stadium so that all spectators have a good view?
Imagine different shaped vessels being filled. Can you work out what the graphs of the water level should look like?
Various solids are lowered into a beaker of water. How does the water level rise in each case?
This problem explores the biology behind Rudolph's glowing red nose.
What shapes should Elly cut out to make a witch's hat? How can she make a taller hat?
Can you draw the height-time chart as this complicated vessel fills with water?
A problem about genetics and the transmission of disease.
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?