Activity 01
Stations Rotation: Tech Lifecycle Stations
Prepare four stations: mining impacts (videos and mineral samples), manufacturing energy (carbon footprint calculators), usage efficiency (app power tests), e-waste sorting (real discarded electronics). Groups rotate every 10 minutes, noting data and proposing fixes at each. Debrief with whole-class share-out.
What is the environmental cost of mining materials for a smartphone?
Facilitation TipAt the Tech Lifecycle Stations, assign one student per station to act as the ‘impact recorder’ who tracks data and questions from peers.
What to look forPose the question: 'Whose responsibility is it to manage the global e-waste crisis: consumers, manufacturers, or governments?' Facilitate a class debate, asking students to support their arguments with evidence about material sourcing, product design, and disposal infrastructure.
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Activity 02
Pairs Audit: Device Footprint Challenge
Pairs select a personal device, research its material sources, energy use, and disposal options using provided templates. They calculate total footprint with online tools and suggest redesigns. Present findings to class for peer feedback.
How can we design software to be more energy efficient?
Facilitation TipDuring the Device Footprint Challenge, pair students who bring different devices so they compare energy, materials, and lifespans side-by-side.
What to look forProvide students with a simplified diagram of a smartphone's lifecycle. Ask them to label three distinct stages (e.g., mining, manufacturing, use, disposal) and write one sentence for each stage describing a specific environmental impact associated with it.
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Activity 03
Whole Class: E-Waste Debate Prep
Divide class into roles: manufacturers, consumers, governments, recyclers. Provide data packs on e-waste stats. Groups prepare arguments on responsibility, then debate with evidence. Vote on best solutions.
Whose responsibility is it to manage the global e-waste crisis?
Facilitation TipFor the E-Waste Debate Prep, give each pair a single controversial headline to unpack before the whole-class discussion.
What to look forAsk students to write down one specific design choice a software developer could make to reduce energy consumption. Then, have them explain in one sentence why this choice would lead to lower energy use.
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Activity 04
Individual: Software Efficiency Hunt
Students test common apps on shared devices, measure battery drain over tasks, and rewrite simple code snippets for efficiency. Compare results and share optimised versions.
What is the environmental cost of mining materials for a smartphone?
Facilitation TipIn the Software Efficiency Hunt, provide a set of code snippets so students can run simple tests and measure energy use differences.
What to look forPose the question: 'Whose responsibility is it to manage the global e-waste crisis: consumers, manufacturers, or governments?' Facilitate a class debate, asking students to support their arguments with evidence about material sourcing, product design, and disposal infrastructure.
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Generate Complete Lesson→A few notes on teaching this unit
Teachers should avoid presenting technology as purely positive; instead, guide students to critique every phase of the lifecycle with data. Research shows that when students collect their own evidence, misconceptions about innovation and recycling fade faster. Use real-world examples (e.g., cobalt mines in Congo, server farms in Iceland) to ground abstract impacts in tangible places.
Successful learning shows when students can explain how a smartphone’s mining, energy use, and disposal each contribute to environmental harm. They should also identify shared responsibility across designers, users, and recyclers.
Watch Out for These Misconceptions
During Tech Lifecycle Stations, some students may assume smartphones are ‘clean’ because they are digital.
During Tech Lifecycle Stations, use the mining station’s soil and water samples to show how rare earth extraction disrupts ecosystems, then ask students to map these impacts onto a lifecycle diagram.
During Device Footprint Challenge, students might believe all devices have similar environmental costs.
During Device Footprint Challenge, provide spec sheets and energy meters so pairs calculate watts used by different devices, then compare totals to challenge initial assumptions.
During E-Waste Debate Prep, students often think recycling bins solve the problem.
During E-Waste Debate Prep, show images of landfills in Ghana and incinerators in India to redirect the idea that recycling alone prevents harm, then assign roles to debate actual responsibility chains.
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