This activity challenges you to decide on the 'best' number to use
in each statement. You may need to do some estimating, some
calculating and some research.
Can you order pictures of the development of a frog from frogspawn
and of a bean seed growing into a plant?
Can you rank these quantities in order? You may need to find out
extra information or perform some experiments to justify your
Can you place these quantities in order from smallest to largest?
Can you put these mixed-up times in order? You could arrange them in a circle.
Can you sketch graphs to show how the height of water changes in
different containers as they are filled?
Can you rank these sets of quantities in order, from smallest to largest? Can you provide convincing evidence for your rankings?
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?
Thomas from Colet Court and pupils from Kingsbury Green Primary
worked particularly thoughtfully on this problem.
Go to last month's problems to see more solutions.
Design and test a paper helicopter. What is the best design?