Lesson 3 of 20 · Breaking Problems Down

Breaking Problems Down — Part 3

Break a big problem into small steps you can code.

What you'll learn

You will learn to break big problems into small, easy steps — the key skill behind all coding.

Words to know

Decomposition: Breaking a big task into smaller steps that are easier to do and to code.
Step: One small part of a bigger task. Steps are done in order.
Task: Something you want the program to do. Big tasks are made of many small steps.

Your turn

📋 Show the steps

Press ▶ Run and see what the computer says!

1Big tasks can feel overwhelming. The trick? Break them into small steps! This code shows a task split into 3 simple steps.
2Think about making a sandwich: 1) Get bread, 2) Add filling, 3) Close it. Each step is easy on its own!
3In coding, we call this 'decomposition' — breaking a big problem into smaller, manageable pieces.
4Every app, game, and website was built this way — one small step at a time. You can build anything if you break it down!

Auto-run is on: change the code and the result updates by itself.

Auto-run

Output

Loading Python... This may take a few seconds.

Check your understanding · 1 of 3

To make a sandwich, what's the first decomposed step?

Check your understanding · 2 of 3

Why is decomposition useful?

Check your understanding · 3 of 3

What is decomposition?

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