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    In this activity, students set up an experiment to determine the biodegradability of different substances.

    By the end of this activity, students should be able to:

    • organise a group of items into categories
    • carry out a simple experiment
    • understand that some materials are biodegradable and others aren’t
    • explain what might affect how quickly something degrades
    • make predictions about the biodegradability of materials.

    Download the Word file (see link below) for:

    • introduction/background notes
    • what you need
    • what to do
    • discussion questions
    • student handout

    Useful link

    Find out more about backyard composting on this website.

      Published 23 June 2008, Updated 23 February 2015 Referencing Hub articles