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Khan Academy Kids Maths

Khan Academy Kids measurement talk maths mission

A practical mini-mission using measurement talk to practise measurement through questions, examples and child-friendly challenges.

Quick answer

Measurement talk maths mission means using everyday conversations and questions to help children understand and practice measuring things around them – like how tall they are, how much juice they drink, or how long a football match lasts. It’s about building real-world maths skills through fun, hands-on talk and activities.

Learning outcome

By the end of this page, you will understand how to talk about measurement in everyday life and use simple measuring tools or comparisons to solve problems. You will be able to:
  • Compare sizes, lengths, weights, and capacities using everyday words
  • Ask and answer questions about how much, how long, or how heavy things are
  • Use simple tools like rulers, scales, or measuring cups to measure
  • Use measurement in games, stories, or real-life situations

Why this matters

Measurement talk helps children understand how the world works. It’s used in cooking, sports, building, shopping, and even in games like Minecraft or Pokémon. When you talk about how tall you are, how much water you drink, or how far you walk, you’re doing maths. Learning to measure and compare helps you solve real-life problems and makes you more confident in everyday situations.

How it works

Measurement talk starts with simple questions:
  1. Ask questions like “How tall are you?” or “Which one is heavier?”
  2. Use words like longer, shorter, heavier, lighter, more, less, full, empty
  3. Compare things by placing them side by side or using tools
  4. Measure with everyday items like blocks, hand spans, or cups
  5. Use numbers and words together, like “This box is 5 blocks long”

Examples you can see

Let’s imagine you are building a treehouse with your friends. You need to measure:
  • How long the wooden planks are – using a ruler or a stick
  • How much water your watering can holds – using a measuring cup
  • How tall you are – using a tape measure or a wall
  • How heavy your tools are – using a kitchen scale or by holding them
Here’s how you might measure a table:
Object How you measure it What you find
Table length Using a ruler or tape measure 120 cm
Table width Using a ruler or tape measure 80 cm
Water in a cup Using a measuring cup 250 ml
Weight of a book Using a kitchen scale 300 g

Try it as a mini adventure

Adventure: The Great Measurement Hunt! You are going on a measurement hunt in your home. Here’s your mission:
  1. Find 3 things that are longer than your hand
  2. Find 3 things that are shorter than your foot
  3. Find 3 things that are heavier than your backpack
  4. Find 3 things that hold more than 1 cup of water
Now, try to measure them with your hands, feet, or simple tools. For example:
  • 4th time: ? toy cars fit in a box
  • 5th time: ? blocks tall is your bookshelf
  • 6th time: ? cups of juice did you drink today
Can you guess how many steps it takes to walk from your bedroom to the kitchen? Try it and measure with your feet or a ruler!

Common mistakes

  • Mistake: Thinking that bigger always means heavier.
    Why it happens: Children often confuse size and weight.
    Fix: Try holding two items – one big and one small – and compare their weights.
  • Mistake: Not using standard words like "longer", "heavier", or "more".
    Why it happens: Kids don’t always know the right words to describe measurements.
    Fix: Practice with these words daily – “This is longer than that.”
  • Mistake: Measuring with different units – like using fingers and then blocks.
    Why it happens: Confusion about using the same tool.
    Fix: Use the same measuring tool each time to get accurate results.

Parent and carer guide

As a parent or carer, you can help by:
  • Asking questions like, “Which one is longer?” or “How much juice is in the cup?”
  • Using everyday items to measure – like cups for water or blocks for length
  • Letting your child lead the measurement talk – they might ask to measure the garden or a pet
  • Not worrying if they get the exact answer wrong – focus on the process of talking and measuring
  • Encouraging them to explain their thinking, like “I think this is heavier because…”
A few minutes of measurement talk can make a big difference in your child’s understanding. Try to make it fun and part of your daily life – not a lesson.

Practice questions

  1. Which is longer: your pencil or your ruler?
  2. How much water do you drink in a day? (Use cups or a measuring jug)
  3. Which is heavier: a book or a toy car?
  4. How tall are you? (Use a wall or a tape measure)
  5. How many steps does it take to walk from the kitchen to your bedroom?
Answers:
  1. Your ruler is longer
  2. 2–3 cups of water
  3. The book is heavier
  4. 120 cm or 1.2 m
  5. 10–15 steps (varies)

FAQ

What is measurement talk in maths?

Measurement talk is using words and questions to talk about how big, long, heavy, or full things are. It helps children understand and use maths in real life.

Why is measurement talk important for young children?

It helps children connect maths to their everyday world. They start to understand how to compare and measure things, which builds confidence in maths and problem-solving.

Can I use measurement talk with my 3-year-old?

Yes! Even young children can talk about size, weight, and capacity. Ask simple questions like, “Which one is bigger?” or “Who has more juice?”

How can I make measurement talk fun?

Use games, stories, and real-life situations. For example, pretend you’re baking and ask how much flour you need, or go on a “measure the room” adventure.

What tools can I use for measurement talk?

Simple tools include rulers, scales, measuring cups, blocks, hand spans, or even your own body parts like feet or hands.