Maths KS2: Calculating food waste and the environmental cost

Stefan Gates meets Pamela Kane from Wastewatch who gives him information on the amount of food which is wasted in the UK each year.

Stefan uses that information to create a pie chart using a real pie to understand the different elements of avoidable and unavoidable food waste.

To find out about waste in the supply chain Stefan visits a supermarket in Manchester.

He speaks to Dan Weston who runs the fruit a where they minimise their food waste in a variety of ways.

Stefan then meets food waste heroes from Newton Ferrers School and joins them for lunch.

They show him how they measure and collect data to compare school dinners with packed lunches and find out which produces more waste.

This clip is from the series Ecomaths.

Teacher Notes

This clip could be used to conduct a survey to find out the percentage of food that is wasted in your school.

Use the ideas from Newton Ferrers to think of ways of collecting your own school data, and then compare your schools results with theirs.

How would you change or extend your survey?

How could you use the survey and present the results to encourage children to reduce food waste?

How long do you need to continue a survey to feel confident that the results are reliable?

Curriculum Notes

This clip is suitable for teaching Maths at KS2 in England, Wales and Northern Ireland and 2nd Level in Scotland.

More from Ecomaths

Balancing the costs and savings of travelling by bike
How to measure temperature and save energy
Understanding how rainwater can be harvested using maths
Using maths to recycle rubbish
Using maths to understand food journeys