Computing · Year 9

Active learning ideas

Environmental Impact of Hardware

Active learning works well for this topic because students need to connect abstract data about e-waste to tangible objects and decisions. Hands-on stations, debates, and simulations help them see the scale and complexity of environmental harm across the hardware lifecycle.

• National Curriculum Attainment Targets
• KS3: Computing - Impact of Technology
• KS3: Computing - Environmental Issues

• 35–50 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Stations Rotation
• 50 min · Small Groups

Stations Rotation: Hardware Lifecycle Stations

Set up stations for extraction (videos of mining pollution), manufacturing (energy calculators), usage (power audits), and disposal (e-waste mock landfills). Groups rotate every 10 minutes, noting impacts and data points on worksheets. End with a class share-out.

Analyze the environmental consequences of extracting raw materials for electronic components.

Facilitation Tip

At the Hardware Lifecycle Stations, circulate with a timer and pre-loaded data cards to keep groups focused on collecting evidence rather than wandering.

What to look for

Provide students with a small electronic component (e.g., a SIM card, a button battery). Ask them to write: 1. One raw material used in this component and its environmental impact during extraction. 2. One potential hazard if this component becomes e-waste.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 02

• Gallery Walk
• 35 min · Pairs

Debate Pairs: Recycle or Repair?

Pairs research arguments for mandatory recycling laws versus right-to-repair policies using provided stats. They present 2-minute speeches, then vote class-wide. Follow with reflection on personal device habits.

Explain the concept of 'e-waste' and its global impact.

What to look for

Pose the question: 'If a company designs a phone to break after two years, who should be responsible for its disposal and why?' Facilitate a class discussion, encouraging students to reference concepts like planned obsolescence and Extended Producer Responsibility.

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Activity 03

• Gallery Walk
• 40 min · Individual

Individual Audit: My Device Footprint

Students select one device, trace its materials via online tools, calculate carbon footprint using simple formulas, and propose three reuse ideas. Share findings in a gallery walk.

Justify the importance of responsible disposal and recycling of electronic devices.

What to look for

Show students a short video clip depicting an e-waste processing facility. Ask them to identify two positive environmental practices and two negative environmental impacts they observe in the footage.

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

Activity 04

• Gallery Walk
• 45 min · Small Groups

Group Simulation: E-waste Global Flow

Small groups model e-waste trade with cards representing devices moving from UK to developing countries. Discuss barriers to recycling at each step, then redesign for better outcomes.

Analyze the environmental consequences of extracting raw materials for electronic components.

What to look for

Provide students with a small electronic component (e.g., a SIM card, a button battery). Ask them to write: 1. One raw material used in this component and its environmental impact during extraction. 2. One potential hazard if this component becomes e-waste.

• Understand
• Apply
• Analyze
• Create
• Relationship Skills
• Social Awareness

A few notes on teaching this unit

Teachers should start with concrete objects like old phones or cables to anchor discussions, then layer in global data to avoid overwhelming students with numbers. Avoid presenting this topic as a problem without solutions; instead, guide students to analyze design choices and policy options that reduce harm. Research suggests role-playing and object-based learning build stronger connections to environmental responsibility than lectures alone.

Successful learning looks like students tracing the full lifecycle of hardware with evidence, weighing trade-offs in repair versus recycling, and applying global data to personal or policy decisions. They should justify their choices with clear reasoning about environmental impact.

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Watch Out for These Misconceptions

• During Hardware Lifecycle Stations, watch for students assuming recycling is always the best solution.

  During Hardware Lifecycle Stations, redirect students to compare energy use, emissions, and material loss across extraction, manufacturing, use, and disposal phases, using the station data to show why prevention and reuse often outperform recycling.

• During the Recycle or Repair debate, watch for students oversimplifying repair as always better than recycling.

  During the Recycle or Repair debate, provide case studies like battery toxicity or lack of repair tools to push students to weigh specific trade-offs and consider Extended Producer Responsibility in their arguments.

• During the E-waste Global Flow simulation, watch for students thinking e-waste harm is limited to the place it is thrown away.

  During the E-waste Global Flow simulation, use the map and transport data to show how toxic leaching and carbon emissions travel across borders, linking local choices to global impacts.

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Methods used in this brief

• Stations Rotation
• Gallery Walk