What Is a Dictionary?
Store labeled pairs.
What Is a Dictionary? is a free Coding for Kids lesson on CoddyKit — lesson 1 of 4. You can read the complete lesson below for free — then practise it hands-on in the browser with a built-in code editor and a 24/7 AI tutor. It is part of the Coding for Kids learning path, one of 4 lessons in the course, and your progress syncs across the web and the CoddyKit app.
Word Boxes! 📦
A dictionary is like a box of labeled drawers! 🗄️ Each drawer has a label (the key) and something inside (the value).
Curly Braces 🌀
We build a dictionary with curly braces { }. Inside we put key: value pairs!
pet = {"name": "Rex"}
print(pet)Key and Value 🔑
The key is the label. The value is what is stored. Here the key is "name" and the value is "Rex"! 🐶
pet = {"name": "Rex"}
print(pet["name"])Many Drawers 🗃️
One dictionary can hold lots of pairs. Just separate them with a comma!
cat = {"name": "Mimi", "age": 3, "color": "gray"}
print(cat)Read One Drawer 👀
To peek inside a drawer, use square brackets with the key name.
cat = {"name": "Mimi", "age": 3}
print(cat["age"])Numbers as Values 🔢
Values can be numbers too, not just words!
score = {"level": 5, "coins": 100}
print(score["coins"])A Friend Card 🪪
Imagine a tiny info card about a friend. A dictionary is perfect for that!
friend = {"name": "Lila", "hobby": "drawing"}
print(friend["hobby"])Mixed Stuff 🎒
A dictionary can mix words and numbers as values. So flexible!
me = {"name": "Sam", "age": 9}
print("I am " + me["name"])Print It All 🖨️
Print the whole dictionary to see every drawer at once.
toy = {"type": "robot", "battery": 80}
print(toy)Empty Box 📭
You can start with an empty box and fill it later: box = {}.
box = {}
print(box)Why Dictionaries? 💡
Lists use number spots (0, 1, 2). Dictionaries use name labels instead, so it is easy to remember what is inside! 🎉
Quick Check ✅
Time for a brain snack! 🍪
You Did It! 🌟
You learned that a dictionary stores key: value pairs in labeled drawers. Use { } to make one and box["key"] to peek inside! 📦
Frequently asked questions
Is the “What Is a Dictionary?” lesson free?
Yes — the full text of “What Is a Dictionary?” is free to read here on the web, and the Coding for Kids course includes 4 lessons in total. To practise it interactively (a built-in code editor and a 24/7 AI tutor) and unlock the rest of the Coding for Kids course, upgrade to CoddyKit PRO.
What will I learn in “What Is a Dictionary?”?
Store labeled pairs. You practise Coding for Kids with hands-on code you run directly in the browser, and a 24/7 AI tutor answers your questions as you work through the lesson.
Do I need any experience to start Coding for Kids?
No prior experience is required. Coding for Kids on CoddyKit is structured for beginners through advanced learners; this is — lesson 1 of 4, so you can start here or from the beginning and move at your own pace.
How long does the “What Is a Dictionary?” lesson take?
Most CoddyKit lessons take about 5–10 minutes. Each one is bite-sized and interactive, so you make steady progress and pick up exactly where you left off across the web and the app.
Can I write and run code in this Coding for Kids lesson?
Yes. Every Coding for Kids lesson includes a built-in code editor, so you write and run real code right in your browser and get instant AI feedback — no local setup required.
All lessons in this course
- What Is a Dictionary?
- Looking Things Up
- Adding and Changing
- A Mini Phone Book