Using and Abusing Percentages

This activity examines the use of percentages in research and the media. The examples used focus on the distinction between absolute and relative percentages and percentage changes. The need for improved education in the area of communication of risk is at the heart of this resource.

Using and Abusing Percentages
This provides a brief overview of the resource and suggests how the topic can be approached in the classroom.

Using and Abusing Percentages: Teachers notes
This document begins with an explanation of the distinction between relative percentage change and absolute percentage change. The hyper-link on page three provides clear explanation of the importance of understanding the difference. Possible learning objectives are listed and suggestions are given on how the task could be introduced. Analysis is provided of each of the ten questions posed in the student handout.

Using and Abusing Percentages: Student worksheet
This four page word document sets out ten questions relating to how percentages can be used or abused in the media, business and in medicine. Calculators will need to be used and the problems should provide many opportunities for class discussion. The task is suitable for group work.