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Computing

Break It Down: Solving Problems Step by Step

Overview

Students explore how complex tasks can be made easier by breaking them into smaller parts.

Learning Objective
Students understand decomposition as breaking a problem into smaller, manageable steps.

Resources needed

  • No materials required
  • Optional: paper and pencils

Lesson stages

0 / 10 done
  1. 1 Introduce decomposition: breaking big tasks into smaller steps.
  2. 2 Give a simple example (making a sandwich).
  3. 3 Students list steps for a familiar task.
  4. 4 Compare lists in pairs.
  5. 5 Discuss differences and missing steps.
  6. 6 Combine steps into a clear sequence.
  7. 7 Introduce idea that computers solve problems this way.
  8. 8 Students apply decomposition to a new task.
  9. 9 Share and refine.
  10. 10 Discuss: how did breaking it down help?

Tap a step to mark it as done.

Variations

  • Use more complex tasks.
  • Turn steps into algorithms.
  • Act out the steps physically.
More information

Teach: break down, step, part, sequence, problem. Use frames: 'First… then…'.

Provide step prompts or visuals. Allow verbal responses.

Can students break tasks into logical steps? Can they explain their sequence?

Fully discussion-based — no materials required.

Students may skip steps or combine too many actions.

Decomposition is a key skill in computing and problem-solving.

Activity details
Primary Medium 25 minutes no prep Pairs, Small Group Indoor & Outdoor
Topics
Decomposition Problem Solving Logic Computational Thinking