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Click here to download the sheet to accompany
this activity (in PDF format).
Pupils work in pairs and have the image sheet as a visual stimulus. Pupils first need to define the problem that they are going to work on – allow them some time to look at the images and work out what the problem is. (The speedometer on the car – an Alfa Romeo Spider – reads km/h and British road signs are given in mph, so how fast can they drive in a 20mph zone etc.)
Working on large sheets of paper with felt pens, pupils can be encouraged to recall a miles-km conversion fact, and from this draw a spider diagram showing lots of useful related facts (if I know this then I also know...) similar to the one shown.
Draw attention to the fact that 0 miles = 0 kilometres.
From this, pupils can draw a conversion graph.
Finally, using the graph, ask pupils to write some guidelines that might be useful for the driver of the car.
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