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← All lessons · 🧑‍💻 Coding Academy

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⏱ 10 min

Free

Step by Step

Order matters! Learn how putting steps in the right order makes a program work.

🎯 What you will learn

  • A sequence is steps in order
  • The wrong order makes funny mistakes
  • How to plan steps before coding

👋 Let’s get started!

What if you put your shoes on BEFORE your socks? 🧦👟 Silly! Order matters for computers too. Steps in order are called a SEQUENCE.

🪜 Step by step

1. 🔢 First, next, last

A sequence has a beginning, a middle and an end. Computers start at the top and go down, one step at a time.

2. 🔀 Mixed-up steps

If steps are in the wrong order, the program does something silly — like pouring milk before getting a bowl!

3. 🗺️ Plan first

Coders plan their steps first. Say them out loud or draw them before you code.

🎨 Unplugged activity

✂️ Draw 4 pictures of making a sandwich on separate papers. Mix them up and ask a grown-up to put them in order. Did they get it right?

Plant a flower!

🕳️ Dig a hole
🌱 Put in the seed
🟫 Cover with dirt
💧 Water it
🌻 Watch it grow

📖 Key words

Tap a card to flip it over!

Sequence
Steps in the right order 🔢
First
The step at the start 1️⃣
Last
The step at the end 🏁

Knowledge Check Quiz

  1. What is a sequence?
  2. Which comes first?
  3. Where does a computer start reading code?
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