Lesson 30 How do I handle the data?

Lesson plan

Piagetian Level      
3 B
Mature
Formal
‘the girls’ science levels are more closely related to their English than the boys’ — maybe we ought to look at the ratios of confirming to disconfirming cases'
‘if a girl gets level 4 in English, then her science level will be between 2 and 5, but the boys’ range 7 is from 1 to 7’
3A
Early
Formal



‘if you look at the Grades A to C, then they do much the same: boys do worse in lower grades’
‘to test the idea that the reaction rate is proportional to concentration you have to plot t/time as a measure of speed to see it the speed doubles’




Choice of correlation diagram to compare results
‘Yes, you can see that the girls do better than the boys’
'looking at the graph, it seems that at each temperature, the one reaction is going about twice as fast’
2B*
Concrete
Generalisation






Creating a bar chart comparison
2B
Mature
concrete
Plot of reaction times against temperature
Middle
concrete
Episode 1
Organising data
Episode 2
Analysing data in greater depth

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Thinking Mathematics Lessons Copyright © by Michael Shayer and Mundher Adhami. All Rights Reserved.

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