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Prerequisites

A good understanding of ratio and proportion−and the ability to multiply and divide−is helpful.

Skill isolation: finding the value of a denominator given a numerator and an equivalent fraction

Probability and sampling

This lesson consists of an example and exam-style questions about the capture-recapture method of estimating the size of a population (usually of wild creatures).

Teacher resources

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Slides in PPTX (with click-to-reveal answers)
Slides in PDF (one slide per page, suitable for importing into IWB software)

Worksheet (with space for student work)
Handout (slides with exercises only; 4 per page for reduced printing)
- Worked solutions to all questions

In the real world

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