What is a Classification Key?

A classification key is a tool that helps to identify living things by asking a series of simple questions.

How it works: Each question has a 'yes' or 'no' answer, and each answer leads you to another question until the object is identified.

  • Keys work by splitting a large group of things into smaller and smaller groups.
  • The questions are based on simple, observable features, like "Does it have legs?" or "Does it have a shell?".
  • Creating your own key is a great way to practise careful observation.