Decomposition rates game

This active, outdoor game challenges learners to sort everyday waste items by how long they take to decompose, encouraging prediction, discussion and problem-solving. 

By placing objects along a measured line, pupils practise numeracy skills while developing an understanding of decomposition timescales and the environmental impact of different materials. The activity provides an accessible starting point for conversations about waste, sustainability and the long-term effects of single-use plastics. 

© Learning Through Landscapes. Licensed under CC BY-NC-SA 4.0

Activities (15+ min)
KS1
KS2
Maths
Biology

Preparation

What you need
  • The decomposition game activity guide
  • A selection of waste materials as listed in the guidance
  • Chalk
  • Measuring tape
Location

Outdoors

Step by step

  1. Download the decomposition game activity guide.
  2. Read the guidance for step by step instructions for each activity.