P5a – Probability and sampling

This is the students’ version of the page. Log in above for the teachers’ version.

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

Teachers: log in to access the following:

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

Teachers: log in to view this content.