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Tota
l mo
nth
ly c
ost
sMobile phone tariffs
total costs for 600 minutes per month
1 Write down three pieces of information that this graph tells you.
2 Which tariff would you prefer?
Mobyphone mobile phone model
Enterminutes
300 Enter number 100-600
TARIFF OPTIONS(monthly)
Monthly cost
Free minutes
Extra minutes
Minutes used
Cost for extra minutes
Total cost
Talk 15 £10.00 15 £0.06 300 £17.10 £27.10Talk 30 £12.50 30 £0.05 300 £13.50 £26.00Talk 45 £15.00 45 £0.04 300 £10.20 £25.20Talk 60 £17.50 60 £0.03 300 £7.20 £24.70Timefree Talk £30.00 0 £0.00 300 £0.00 £30.00Pay As You Go £0.00 0 £0.08 300 £24.00 £24.00
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100 200 300 400 500 600
Talk 15 Talk 45 Pay as You go
Mobile phone tariffs
Minutes used
Total
cost
Learning outcomes
All students will be able to develop ICT-based models and test predictions by changing variables and rules.
Most Students will be able to develop ICT-based models and test predictions by changing variables and rules and be able to say why there prediction was right or wrong
Some Students will be able to develop ICT-based models and test predictions by changing variables and rules and be able to say why there prediction was right or wrong and elaborate on how they could adapt it to make it better.
Possible advantages of using ICT to produce graphical representations of data
O Automatically produces a key, a title and labels for the
axes
O Easily produces graphs that are visually appealing
O Allows you to try and to investigate different types of
graph
O Graphs can be changed automatically as data changes
O Produces graphs very quickly
O Allows scales to be changed easily
Possible disadvantages of using ICT to produce graphical representations of data
O It is too easy to use the wrong kind of graph
O The most visually appealing graph is not necessarily
valid
O Automatic rescaling can lead the unwary into false
conclusions
