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Age range: 7-11
Duration: 30-59 mins
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  • Maths
  • Science

Put a ring on it

Measuring the circumference of tree trunks and working out their age

This is one of a set of resources developed to support the teaching of the primary national curriculum. They are designed to support the delivery of key topics within maths and science. This resource focusses on measuring the circumference of a tree trunk and using this information to calculate its age.

Trees are an important part of our natural environment. We can use our maths and science knowledge to better understand them and hence the environment around us!

Activity info, teachers' notes and curriculum links

In this activity learners will measure the circumference of a tree trunk. They will use this information and their number skills to calculate the age of the tree in years. They will then repeat this for other trees and discuss their results as a class.

This activity could be used as a main lesson activity, to teach learners how to collect data through measurement and to use number skills in a practical context. It could also be used as one of several activities within a wider scheme of learning focusing on the use of maths and science to understand the natural environment.

The activity sheet includes teachers' notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales.

Remember, it's all free!...and registration is free too!

All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students' and your schools' needs.

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