Computing · Year 3

Active learning ideas

What is a Computer Network?

Active learning works for this topic because Year 3 students need to see and feel how networks function, not just hear about them. Moving from abstract explanations to hands-on simulations and real-world hunts helps students connect classroom devices to their everyday experiences at school.

• National Curriculum Attainment Targets
• KS2: Computing - Computer Networks
• KS2: Computing - Information Technology

• 15–45 min
• Pairs → Whole Class
• 3 activities

Activity 01

• Simulation Game
• 30 min · Whole Class

Simulation Game: The Human Network

Assign students roles such as 'Laptop', 'Router', and 'Printer'. Use balls of wool or string to physically connect the 'devices' to the central router, then pass a 'message' (a beanbag) from one device to another via the hub.

Analyze how a message travels from one computer to another in our classroom.

Facilitation Tip

During The Human Network simulation, start with students standing in a tight circle holding hands to represent cables, then gradually widen the circle to show what happens when a connection is weak.

What to look for

Give students a card with a picture of a router. Ask them to write two sentences explaining its job in a school network and one thing that would stop working if it broke.

• Apply
• Analyze
• Evaluate
• Create
• Social Awareness
• Decision-Making

Activity 02

• Inquiry Circle
• 45 min · Small Groups

Inquiry Circle: Hardware Hunt

In small groups, students explore the classroom or school to find and photograph network hardware like Wi-Fi access points, ethernet ports, and printers. They then create a simple map showing how these items might be linked.

Predict what would happen to our work if the school network stopped functioning.

Facilitation Tip

When running the Hardware Hunt, provide labelled diagrams of routers, cables, and Wi-Fi symbols so students can match real objects to their functions.

What to look for

Draw a simple classroom network diagram on the board with 3 computers, a printer, and a router. Ask students to point to the device that sends messages between the computers and explain why.

• Analyze
• Evaluate
• Create
• Self-Management
• Self-Awareness

Activity 03

• Think-Pair-Share
• 15 min · Pairs

Think-Pair-Share: The Broken Link

Ask students to imagine the router has lost power. Partners discuss which school activities would still work (writing in a notebook) and which would stop (printing or searching the web) before sharing with the class.

Differentiate between hardware that connects us and hardware that stores our data.

Facilitation Tip

Use The Broken Link Think-Pair-Share to highlight that network problems often come from missing or damaged physical parts, not just 'magic' signals.

What to look for

Pose the question: 'Imagine our classroom network suddenly stopped working. What are three things you would not be able to do with your computer right now, and why?' Listen for student reasoning about connectivity.

• Understand
• Apply
• Analyze
• Self-Awareness
• Relationship Skills

A few notes on teaching this unit

Approach this topic by making the invisible visible. Use metaphors that Year 3 students understand, like a walkie-talkie network for the simulation or a spider’s web for the router’s role. Avoid overcomplicating with technical details—focus on the concept of sharing and communicating. Research shows that concrete, physical models help young learners grasp abstract ideas like connectivity and data flow.

Successful learning looks like students identifying key network hardware, explaining how devices communicate, and using accurate vocabulary to describe connections. They should confidently point out the router as the central organiser of a local network and predict simple breakdowns.

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Watch Out for These Misconceptions

• During The Human Network simulation, watch for students who think the internet and a local network are the same thing. Redirect by asking them to imagine their classroom as a room and the internet as roads outside the room; then have them act out a printer working without roads.

  During the Hardware Hunt, point out the router’s cables and explain that even wireless signals travel to this physical box. Show students the back of a router to highlight the wires that make Wi-Fi possible.

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Methods used in this brief

• Simulation Game
• Inquiry Circle
• Think-Pair-Share