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Scratch Maths

Where is logic hiding in Scratch story choices?

Use if-then choices to write branching maths adventures.

Quick answer

Logic in Scratch story choices is hidden in if-then statements, which let your story change based on what the player picks. You can use these to make exciting, interactive maths adventures where decisions lead to different outcomes.

Learning outcome

By the end of this page, you will understand how to use if-then logic in Scratch to create branching story adventures that change based on player choices. Success signs:
  • You can explain what an "if-then" statement does in Scratch
  • You can make a simple story in Scratch with at least two different paths
  • You can use numbers or variables to decide which path the story takes
  • You can create a story that includes a maths question that affects the story outcome

Why this matters

Logic is how we make decisions in everyday life. In Scratch, logic helps you create exciting stories where the player's choices matter. This kind of thinking is used in games, apps, and even in solving puzzles or making plans. Understanding how to use logic in Scratch helps you think like a programmer and makes your stories more fun and interactive.

How it works

In Scratch, you can use if-then blocks to make your story change. These blocks are like little decision-makers that say: "If something happens, then do this." Here’s how to build a simple logic-based story:
  1. Start your story with a question or situation
  2. Add an if-then block to decide what happens next
  3. Ask the player to choose between two options
  4. Use a variable or number to decide which path the story takes
  5. Make sure each path leads to a new part of the story

Examples you can see

Let’s imagine a simple story adventure: "The Magic Forest." Step 1: The story starts with a choice:
  • Player can choose to go left or right
Step 2: We use an if-then block:
  • If the player clicks "left", then show the message "You found a treasure chest!"
  • If the player clicks "right", then show the message "You met a friendly dragon!"
Step 3: We can even add maths:
  • Ask the player to solve a simple maths problem
  • If they answer 5 + 3 = 8, then go to one path
  • If they answer 5 + 3 = 7, then go to another path

Try it as a mini adventure

Let’s go on a story adventure together! Adventure: The Treasure Hunt You are on a treasure hunt in a magical land. You find a map with two paths. 1st time: You see two signs:
  • Sign A says: "If you are brave, go left"
  • Sign B says: "If you are clever, go right"
2nd time: You must decide which path to take. 3rd time: You meet a wizard who asks you a maths question:
  • Wizard says: "What is 4 + 6?"
4th time: If you answer 10, you go left. If you answer 9, you go right. 5th time: You find your treasure! Can you think of another maths question that could change the path of your story?

Common mistakes

  • Mistake: Forgetting to use the correct variable or number in the if-then block.
    Why it happens: Kids might not understand how variables work in Scratch.
    Fix: Always double-check that your variable name matches exactly what you're using in the block.
  • Mistake: Using "if-then" blocks in the wrong order.
    Why it happens: It's easy to get confused when there are many blocks.
    Fix: Use the green "if" block and the yellow "then" block together, and test your story often.
  • Mistake: Not testing the story choices.
    Why it happens: Kids want to finish quickly and skip checking.
    Fix: Always play through your story and try both choices to make sure it works.

Parent and carer guide

As a parent or carer, you can help by:
  • Encouraging your child to think of their own story ideas
  • Helping them test their story with different choices
  • Using simple maths questions like 2 + 2 or 5 - 1 to keep it fun
  • Noticing if they're getting frustrated with blocks and offering support
  • Letting them make their own mistakes and learn from them
What to say:
  • "Let's think of a story where the player can choose between two paths"
  • "Can you make a maths question that changes the story?"
  • "What happens if the player picks the wrong answer?"
What not to worry about:
  • They don’t have to make a perfect story
  • It's okay if the story doesn't work the first time
  • They are learning logic and problem-solving

Practice questions

  1. What does an "if-then" block do in Scratch?
  2. How can you use numbers to change your story path?
  3. If you ask "What is 3 + 4?", what should you do if the player answers 7?
  4. Can you name two ways to change your story in Scratch?
  5. Why is it important to test your story with different choices?
Answers:
  1. It makes the story change based on a condition
  2. Use a variable or number to decide which path to take
  3. Go to the path where the story continues if the answer is correct
  4. Using if-then blocks and variables
  5. To make sure your story works correctly

FAQ

What is an if-then block in Scratch?

An if-then block is a programming tool that helps your story make decisions. If a certain condition is true, then something happens.

Can I use maths questions in my Scratch story?

Yes! You can ask players to solve maths problems, and the answer can decide which path the story takes.

How do I make my story more fun?

Use exciting choices, interesting characters, and fun maths questions. Try to make the story feel like an adventure.

Do I need to know a lot of Scratch to use if-then blocks?

No! You can start with simple if-then blocks and add more as you learn.

Can I make a story with more than two paths?

Yes! You can use multiple if-then blocks or even "if-then-else" blocks to create more choices.