List

Thinking Functionally

The idea of a function lives at the heart of mathematics and mathematical modelling, and the graphs of functions can be very illuminating. The resources below explore a variety of different functions in both mathematical and practical contexts, and highlight important aspects of the functions' behaviour.
Absolutely!
problem

Absolutely!

Age
16 to 18
What can you say about this graph? A number of questions have been suggested to help you look at the graph in different ways. Use these to help you make sense of this and similar graphs.
Picture the process I
problem

Picture the process I

Age
16 to 18

How does the temperature of a cup of tea behave over time? What is the radius of a spherical balloon as it is inflated? What is the distance fallen by a parachutist after jumping out of a plane? After sketching graphs for these and other real-world processes, you are offered a selection of equations to match to these graphs and processes.

Approaching asymptotes
problem

Approaching asymptotes

Age
16 to 18
Can you describe what an asymptote is? This resource includes a list of statements about asymptotes and a collection of graphs, some of which have asymptotes. Use the graphs to help you decide whether you agree with the statements about asymptotes.
Two-way functions
problem

Two-way functions

Age
16 to 18
This gives you an opportunity to explore roots and asymptotes of functions, both by identifying properties that functions have in common and also by trying to find functions that have particular properties. You may like to use the list of functions in the Hint, which includes enough functions to complete the table plus some extras.You might like to work on this problem in a pair or small group, or to compare your table to someone else's to see where you have used the same functions and where not.
Circumference and Diameter
problem

Circumference and Diameter

Age
11 to 14
Challenge level
filled star empty star empty star
Which of these graphs could be the graph showing the circumference of a circle in terms of its diameter ?
Fill Me Up
problem
Favourite

Fill Me Up

Age
11 to 14
Challenge level
filled star filled star empty star

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