Big Ideas for Young Critical Thinkers: Why Arguments and Reasoning Matter in Primary Schools

“Children are naturally curious” is a phrase that is often heard when discussing or debating learning. Classrooms become places buzzing with curiosity – pupils confidently sharing ideas, asking great questions, and working together to figure things out! That’s what happens when primary children are taught the critical thinking skills of argument and reasoning. 

At first glance, you might think, “Aren’t they too young to argue?” But, teaching young children how to structure their ideas, reason things out, and explore other viewpoints is one of the most valuable life skills we can give them. 

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What Does Argument and Reasoning Look Like in the Classroom?

For primary-aged children, argument and reasoning aren’t about long debates or winning someone over to your opinion. It’s about teaching them to think, question and explain. Imagine a child saying:

• “I think the story ended this way because…”
• “What if we tried solving the problem another way?”
• “I don’t agree, but I understand your idea. Can we try both?”

These kinds of conversations spark creativity and critical thinking. Children begin to see that it’s okay to have different opinions, as long as they can explain their reasons and listen to others.

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Why Teach These Skills So Early?

As mentioned previously, primary school children are naturally curious and full of questions. This is the perfect time to encourage reasoning and teach them how to organise their thoughts. Here’s why teaching these critical thinking skills to primary children is so important:

• 1. To Boost Confidence
  
  When children feel comfortable sharing their ideas, they develop self-belief. They learn that their thoughts and opinions matter.

• 2. To Build Respect for Others
  
  When pupils hear different viewpoints, they start to understand that there’s more than one way of looking at things. It teaches them empathy and respect for others.

• 3. To Encourage Problem-Solving
  
  Reasoning helps children become better problem-solvers. Whether it’s figuring out how to build a tall Lego tower or how to share a task between friends, reasoning is the key to finding solutions.

• 4. To Prepare Them for the Future
  
  In today’s world, children are surrounded by information – some of it true, some of it not. Teaching reasoning early gives them the tools to spot the difference and make informed decisions.

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How Can We Build These Critical Thinking Skills in Primary Schools?

The good news? Children are already asking “Why?” and “What if?”  Dimensions ‘Learning Means the World’ Curriculum, through its tried and tested innovative approach, puts children and their questions at the heart of its thematic units. Here are a few ways teachers are nurturing argument and reasoning skills through engaging and purposeful learning:

1) Encourage Open-Ended Questions

Instead of asking yes-or-no questions, try ones like:

• “Why do you think Mary Anning searched for fossils?”
• “What could we do differently next time when we compose a repeating rhythm pattern?”

This gets children thinking beyond the obvious and encourages deeper reasoning.

2) Start with Stories

Books and stories are a great way to spark discussion. After reading, ask children questions like:

• “Why do you think the character made that choice?” 
• “What would you have done differently?”

This allows them to practice explaining their thoughts in a safe and familiar context.

3) Use Everyday Situations

Even playground disputes can become teachable moments. For example:

• “Why do you think your friend got upset?”
• “How could you solve this problem together?”

These real-life examples make reasoning feel natural and relevant.

4) Try Simple Debates

Pick fun, low-stakes topics that children care about, like:

• “Which snack do you like the best – chocolate or fruit?”
• “Which is the best superpower: flying or invisibility?”

Children can practice stating their opinions and backing them up with reasons.

5) Hands-On Problem Solving

Use collaborative projects or STEM challenges to encourage teamwork and reasoning. Pupils are not expected to produce identical outcomes, instead they are encouraged to try out their ideas and understand that sometimes they work and sometimes they don’t! For instance:

• “How can we build a bridge using only paper and tape?”
• “What can we do to make the bridge stronger?”
• “What’s the best way to split this pizza equally?”

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What’s the Bigger Picture?

Teaching primary children the critical thinking skills of argument and reasoning isn’t just about learning in school. It’s about equipping them for life. Children who can think critically, listen to others, and solve problems are better prepared for everything whether that’s making friends, handling challenges, or stepping into the world, as adults of the future.

At its heart, it’s about helping children find their voice. It’s teaching them that their ideas matter – and that learning to think, reason, and explore is the key to unlocking their potential.

What’s Next?

Let’s make our classrooms places where pupils have the freedom to feel confident to think, share, and question. The skills we teach them today will shape the curious, empathetic, and resilient adults they’ll become tomorrow.

Because really, it’s never too early to start building big ideas with young thinkers.

Discover more about how our ‘Learning Means the World’ curriculum uses arguments and reasoning to build critical thinking in primary pupils.

Click here to find out more about our curriculum.