This activity is based on a wind chill model for determining the effective temperature at low temperatures and high winds. Students are asked to use the formula given to make calculations and to extend this to designing a ready reckoner.

Summary

This activity is based on a wind chill model for determining the effective temperature at low temperatures and high winds. Students are asked to use the formula given to make calculations and to extend this to designing a ready reckoner.

Prior knowledge

It will require students to be confident with substituting numbers into complex formulae and also experienced in using spreadsheets, etc. to produce data for the ready reckoner.

Relevance to Core Maths qualifications

- AQA
- C&G
- Eduqas
- Pearson / Edexcel
- OCR

Suggested approaches

First discuss students’ experiences with the sensation felt in low temperatures and high wind speeds. In the winter, wind chill temperatures are often given on TV weather forecasts, so it might be good to use this resource in the winter season. The extension to produce a ready reckoner for practical application will be more of a challenge and best suited to a group activity.

Resources/documentation

In addition to this overview there are:

- Teacher notes
- Handout

Relevant digital technologies

Spreadsheets would be very helpful for the suggested extension.

Possible extensions

A further extension is to research and compare other models used for estimating the wind chill factor.

Acknowledgement

This is a resource developed for the CMSP by David Burghes (CIMT, Plymouth University).