KS2 Science textbook

Chapter 3: Classification keys

  • Strand Living things and their habitats
  • Level Year 4
  • Practice 84 questions with step-by-step solutions

National Curriculum for England, Key Stage 2 science, Year 4. Content: LH2 (summary): use and apply classification keys to sort, identify and name living things in nearby and wider surroundings.

Open Year 4 chapter

By the end of this chapter you will be able to

  • Explain that a classification key asks yes or no questions to name a living thing
  • Follow an animal key step by step, and say which step gives a name
  • Use a key for leaves to name four trees from their leaves
  • Use a key for minibeasts to name animals found in a garden
  • Write a simple yes or no question that separates two living things
  • Explain why the features in a key must be checked in a set order

You should already know

  • Grouping living things by their shared features (Year 4 Science, Chapter 2)
  • Living things and their habitats, and naming plants and animals (Year 2 Science, Chapter 3)

Where this leads

  • Habitats, changes in the environment and food chains (Year 4 Science, Chapter 4)
  • Identifying living things in more detail (Year 5 Science)

Lessons in this chapter

  1. 3.1 What a classification key is
  2. 3.2 Using a key for animals
  3. 3.3 Using a key for leaves
  4. 3.4 Making a key
  5. 3.5 Naming minibeasts nearby
  6. Summary and key words
  7. Check-up and practice test questions

Read the whole chapter on one page (good for printing).