X Tables
Lego Games Maths

LEGO Games fraction builds maths mission

A practical mini-mission using fraction builds to practise fractions through questions, examples and child-friendly challenges.

Quick answer

You can use LEGO® bricks to build fractions and learn how parts make a whole, like 1/2, 1/4, and 1/3 of a model.

Learning outcome

By the end of this page, you will understand how to make and show fractions using LEGO® bricks, and you will be able to divide a set of bricks into equal parts and describe how many parts you have. Success signs:
  • You can build a LEGO model and split it into equal parts
  • You can name fractions like 1/2, 1/4, and 1/3
  • You can explain how many parts you have of a whole model
  • You can use LEGO bricks to solve simple fraction problems

Why this matters

Fractions help you understand how parts fit together to make a whole. Whether you're sharing a pizza, dividing a LEGO model, or cooking a recipe, fractions help you know how much of something you have. LEGO bricks make it easy to see and feel fractions in a fun way.

How it works

Think of a LEGO brick as a whole. If you split it into equal parts, each part is a fraction of the whole. For example:
  1. Take one LEGO brick
  2. Split it into 4 equal parts
  3. Each part is 1/4 of the whole brick
You can use this idea to build models and show fractions in many ways.

Examples you can see

Let’s imagine you have a LEGO wall made of 8 bricks. You want to split it into equal parts. Example 1: 1/2 of the wall If you split the wall into 2 equal parts, each part has 4 bricks. So, 1/2 of 8 bricks = 4 bricks. Example 2: 1/4 of the wall If you split the wall into 4 equal parts, each part has 2 bricks. So, 1/4 of 8 bricks = 2 bricks. Example 3: 1/8 of the wall If you split the wall into 8 equal parts, each part has 1 brick. So, 1/8 of 8 bricks = 1 brick. You can also make fraction towers with bricks:
  • Make a tower with 6 bricks
  • Paint or colour 2 bricks
  • 2 out of 6 bricks are painted, so that is 2/6

Try it as a mini adventure

LEGO Fraction Builder Mission You are a LEGO architect and you need to build a fraction city! Here's your mission:
  1. Choose a LEGO model (like a house, castle, or car)
  2. Decide how many bricks you will use (at least 12 bricks)
  3. Split your model into equal parts (like 2, 3, 4, or 6 parts)
  4. Draw a picture of your model and label the fractions
  5. Count how many bricks are in each part
Example:
  • You build a car with 12 bricks
  • You split it into 3 equal parts
  • Each part has 4 bricks
  • So 1/3 of your car = 4 bricks
Now try this with your own LEGO model and see how many different fractions you can make!

Common mistakes

  • Mistake: Thinking that 1/2 means one brick out of two bricks.
    Why it happens: Not understanding that fractions need equal parts.
    Fix: Use the same size bricks and make sure the parts are the same.
  • Mistake: Counting the wrong number of bricks when splitting.
    Why it happens: Not counting carefully or not dividing equally.
    Fix: Count your bricks first, then divide them into equal parts.
  • Mistake: Saying 2/3 is the same as 3/2.
    Why it happens: Mixing up the numerator and denominator.
    Fix: Remember the top number is how many parts you have, and the bottom number is how many equal parts the whole is split into.

Parent and carer guide

You can help your child by:
  • Building a simple LEGO model together and splitting it into equal parts
  • Asking questions like: “How many bricks are in each part?” or “What fraction of the model is blue?”
  • Using everyday examples like sharing a pizza or dividing a cake into equal slices
  • Letting them draw or write about their fraction builds
  • Encouraging them to try different ways to split the same model
What to say:
  • “Can you show me 1/4 of your tower?”
  • “How many bricks are in each part?”
  • “Can you make a model that shows 1/3?”
What not to worry about:
  • They might not get the right answer at first – that’s normal!
  • They may use different methods – that’s okay too
  • Don’t rush them – let them explore and discover

Practice questions

  1. If you have 12 bricks and split them into 3 equal parts, how many bricks are in each part?
  2. You split a LEGO wall of 16 bricks into 4 equal parts. How many bricks are in each part?
  3. If you have 10 bricks and split them into 5 equal parts, how many bricks are in each part?
  4. You split a model with 20 bricks into 10 equal parts. How many bricks are in each part?
  5. You have 15 bricks and split them into 3 equal parts. What fraction of the whole is one part?
Answers:
  1. 4 bricks
  2. 4 bricks
  3. 2 bricks
  4. 2 bricks
  5. 1/3

FAQ

What is a fraction?

A fraction is a way to show part of a whole. It has a top number (numerator) and a bottom number (denominator). For example, 1/2 means one part out of two equal parts.

Can I use any number of LEGO bricks to make fractions?

Yes! You can use any number of bricks as long as you split them into equal parts. The more bricks you have, the more fraction options you can try.

How do I know if the parts are equal?

Equal parts are the same size. You can check by placing them side by side or by counting the bricks in each part to make sure they match.

Why do we learn fractions with LEGO?

LEGO bricks help you see and touch fractions. This makes learning easier and more fun. It also helps you understand how parts make a whole in real life.

Can I use fractions in other games or activities?

Yes! You can use fractions when cooking, sharing snacks, playing board games, or even building with other toys. Fractions are everywhere!