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Centre for Research in Mathematics Education (CRME)
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Modelling population growth: having kittens
This is a problem solving lesson, designed to help you assess how well students are able to:
This lesson unit is intended to help you assess how well students are able to:
- Interpret a situation and represent the constraints and variables mathematically
- Select appropriate mathematical methods to use
- Make sensible estimates and assumptions
- Investigate an exponentially increasing sequence
- Communicate their reasoning clearly
A claim is made that in 18 months a cat can have 2000 descendants. Students are given five cards showing facts about reproduction in cats. They must assess the validity of the claim in light of the facts. In addition to working out their own solution, examples of student work are provided for peer assessment.
This is a problem solving lesson from the Mathematics Assessment Resource Service, a collaboration between UC Berkeley and the Shell Centre team at the University of Nottingham. Further information on the collection is given here.
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