Lesson 9 Framed tiles

Lesson plan

Piagetian Level Learners Thinking and abstract of the activity  
3A
Early
Formal
Realisation that perimeter can be great if width is narrow 'the longest ribbon is always the one that is one tile deep' Expression in terms of generalised number
'P = 2L + 2S'

2B*
Concrete
Generalisation
‘area is one thing; perimeter is another’





‘can't tell between B, C and D, need to measure somehow’
'twice the long side plus twice the short one gives the perimeter'
'get near a square shape to use less ribbon'
2B
Mature
concrete


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‘D looks the biggest’
'I think A would have most ribbon because it has the longest sides’
Mid
concrete
Episode 1
Biggest picture:
two meanings
Episode 2
Working it out with numbers

Episode 3
General rule and formulae

License

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

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