Lesson 22 Comparing correlations

Lesson plan

Piagetian Level Learners Thinking and abstract of the activity
3 B
Mature
Formal







‘you can see that the narrower the range, the higher the ratio of confirming cases'

'So the ratio tells you how closely the results relate to each other’.
‘it's 17/5, or just over 3 times as many confirming cases’
3A
Early
Formal



Preparing the 4-cell transforms of the data
2B*
Concrete
Generalisation
Applying ratio reasoning to the comparisons






Handling the comparisons in terms of median and range
Mature
concrete
Episode 1
Intuitive comparisons of correlation

Episode 2
Measuring correlation using confirming and disconfirming values

License

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

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