Mermaid maths quest: probability
A story-led junior maths adventure using pearl patterns, shell money and underwater symmetry to talk about likely, unlikely, certain and impossible events.
Quick answer
In a Mermaid maths quest: probability, you learn how likely or unlikely it is that something will happen. You discover that some things are certain, some are impossible, and others are somewhere in between.
Learning outcome
By the end of this page, you will understand how to describe events using words like certain, impossible, likely, and unlikely, and you will be able to sort everyday events into these groups.
- I can say if something is certain, impossible, likely, or unlikely.
- I can match events to their probability words.
- I can explain why some things happen more or less often than others.
- I can play a game where I guess what will happen next in a sea adventure.
Why this matters
Probability helps you think about what might happen in the future. It’s useful for making smart choices, like deciding if you’ll get a rainy day or a sunny day when planning your picnic. In games, you can use probability to guess what might come up next. In your Mermaid maths quest, probability helps you understand what treasures you might find or what dangers you might face!
How it works
Probability is about how sure or unsure we are that something will happen.
- Certain means it will definitely happen. (Like the sun rising tomorrow)
- Impossible means it will never happen. (Like a fish flying)
- Likely means it probably will happen. (Like seeing a dolphin)
- Unlikely means it might happen, but not very often. (Like finding a golden pearl)
Think of it like a sea adventure. You can’t know exactly what will happen, but you can guess how likely it is!
Examples you can see
Imagine you're on a Mermaid maths quest in the ocean. Here are some events and how likely they are:
| Event | How likely? |
|---|---|
| Seeing a fish swim past | Likely |
| Getting a treasure chest | Unlikely |
| Getting a gold coin from a shell | Impossible |
| Meeting a friendly mermaid | Likely |
| Being able to fly underwater | Impossible |
| Winning a shell game | Unlikely |
| It raining | Unlikely (if it’s sunny) |
These events help you understand how probability works in the sea. You can make a list of your own events and sort them too!
Try it as a mini adventure
Let’s go on a Mermaid maths quest! You are exploring a magical underwater world. Here’s your adventure:
- First time: You see a shiny shell on the seafloor. Is this likely or unlikely?
- Second time: You meet a small jellyfish. Is this likely or unlikely?
- Third time: You find a treasure map in a coral cave. Is this likely or unlikely?
- Fourth time: You see a whale singing. Is this likely or unlikely?
- Fifth time: You discover a golden pearl in a seashell. Is this likely or unlikely?
Now, try to write down your answers and explain why you think so. Is it possible to find a golden pearl? Is it certain that you will see a jellyfish? Make your own Mermaid maths quest and sort the events!
Common mistakes
- Mistake: Thinking that something likely will always happen.
Why it happens: Children think that if something is likely, it must happen.
Fix: Remember, likely means probably, not definitely. It’s still a chance! - Mistake: Saying impossible events can happen.
Why it happens: Children sometimes confuse what is possible with what is probable.
Fix: Impossible means never, ever. Like a fish flying, it’s just not possible! - Mistake: Confusing certain and likely.
Why it happens: Both seem to mean "yes, it will happen".
Fix: Certain means it will happen, and likely means it might happen, but not for sure.
Parent and carer guide
Help your child by:
- Asking them to think of events from their own day and sort them into certain, impossible, likely, or unlikely.
- Using a simple game like rolling a dice or flipping a coin to show probability in action.
- Encouraging them to explain their thinking about why they sorted an event as they did.
- Not worrying if they mix up the words at first – it's normal to learn!
- Playing the Mermaid maths quest game together – make up your own underwater events!
Remember, the goal is not to get it right every time, but to understand the idea of how events can be more or less likely to happen.
Practice questions
- Is it certain, impossible, likely, or unlikely that you will see a penguin at the beach?
- Is it certain, impossible, likely, or unlikely that you will find a treasure chest in your garden?
- Is it certain, impossible, likely, or unlikely that it will rain tomorrow if it is sunny today?
- Is it certain, impossible, likely, or unlikely that you will see a mermaid in the ocean?
- Is it certain, impossible, likely, or unlikely that you will eat your dinner tonight?
Answers
- Impossible – Penguins live in cold places, not at beaches.
- Unlikely – Treasure chests are rare in gardens.
- Unlikely – It’s sunny today, so it’s not very likely to rain.
- Likely – Mermaids are part of ocean stories, so it’s possible, but not certain.
- Certain – You usually eat dinner every night.
FAQ
What does probability mean?
Probability means how likely or unlikely something is to happen. It helps us guess what might come next.
Can you give me an example of a likely event?
Seeing a bird fly in the sky is likely, because birds often fly.
What is the difference between certain and likely?
Certain means it will definitely happen, like the sun rising. Likely means it might happen, but not for sure, like seeing a dolphin.
Can you have more than one answer for the same event?
Yes! For example, seeing a jellyfish is likely in the ocean, but unlikely in your garden.
How can I practice probability at home?
Try sorting everyday events into groups, or play games where you guess what will happen next – like rolling dice or flipping a coin.