Computing · Year 6 · The Impact of Technology on Society · Summer Term

E-Waste: The Environmental Cost of Tech

Students explore the environmental impact of electronic waste, from manufacturing to disposal.

• National Curriculum Attainment Targets
• KS2: Computing - Digital Literacy
• KS2: Computing - Information Technology

About This Topic

E-waste covers discarded electronics such as phones, tablets, and computers, highlighting technology's hidden environmental toll. Year 6 students trace the lifecycle from mining rare earth metals, which scars landscapes and contaminates water, to energy-heavy manufacturing and end-of-life disposal. Landfills leach toxins like lead and mercury into soil, while incineration spews harmful fumes. This unit meets KS2 Computing standards in digital literacy by prompting students to question technology's sustainability.

Key questions guide inquiry: students explain production costs through resource depletion, analyze disposal paths like export to developing countries for unsafe dismantling, and predict escalating impacts from rising device turnover. These build analytical skills, connecting Computing to environmental science and citizenship.

Active learning excels with this topic. Hands-on audits of classroom devices reveal personal contributions to e-waste, while group simulations of recycling processes clarify complex global flows. Such approaches turn abstract data into tangible actions, fostering responsibility and creative solutions.

Key Questions

1. Explain the environmental cost associated with the production and disposal of electronic devices.
2. Analyze what happens to old tablets and phones after they are thrown away.
3. Predict the future environmental impact if e-waste continues to grow at its current rate.

Learning Objectives

• Analyze the environmental impact of mining rare earth metals for electronic device production.
• Explain the toxic substances released into the environment during the disposal of e-waste.
• Compare the environmental costs of manufacturing new devices versus repairing or refurbishing old ones.
• Evaluate the ethical implications of exporting e-waste to developing countries.
• Propose sustainable solutions for managing electronic waste at a school or community level.

Before You Start

Introduction to Digital Devices

Why: Students need a basic understanding of what electronic devices are and how they are used before exploring their lifecycle and disposal.

Basic Understanding of Pollution

Why: Prior knowledge of how pollution affects the environment is necessary to grasp the specific impacts of e-waste.

Key Vocabulary

E-waste	Discarded electronic devices such as computers, mobile phones, and televisions. It includes items that are intended for disposal or are no longer wanted.
Rare earth metals	A group of 17 elements crucial for manufacturing many electronic components, including smartphones and computers. Their extraction can cause significant environmental damage.
Leachate	Liquid that has passed through a landfill or other waste material, picking up contaminants. This toxic liquid can pollute soil and groundwater.
Incineration	The process of burning waste materials. While it can reduce waste volume, it can also release harmful pollutants into the atmosphere if not managed properly.
Planned obsolescence	A strategy where products are designed to have a limited lifespan, encouraging consumers to buy new ones more frequently. This contributes to increased e-waste.

Watch Out for These Misconceptions

Common Misconception

Throwing away old devices makes them disappear harmlessly.

What to Teach Instead

Devices end up in landfills or are shipped abroad for burning and dismantling, releasing toxins. Mapping activities show the journey, helping students visualize pollution paths through peer-shared models.

Common Misconception

Recycling solves all e-waste problems.

What to Teach Instead

Only a fraction gets properly recycled; much is lost or mishandled. Sorting simulations expose gaps, with discussions revealing prevention's role over cure.

Common Misconception

Manufacturing new devices has no environmental cost.

What to Teach Instead

It demands vast resources and energy. Lifecycle audits quantify this, shifting focus from use to production via collaborative data comparison.

Active Learning Ideas

Classroom Audit: E-Waste Inventory

Students list and categorize classroom electronics by age and condition. They research disposal fates using provided fact sheets, then tally potential waste volumes. Groups present findings with photos.

30 min·Small Groups

Lifecycle Mapping: Phone Journey

Pairs draw a flowchart of a smartphone's life from mine to dump. Add annotations for impacts at each stage using online videos. Share maps on a class wall display.

45 min·Pairs

Future Forecast Debate: E-Waste Scenarios

Divide class into teams to debate best-case and worst-case e-waste futures based on current trends. Use graphs of global data. Vote on most likely outcome with reasons.

40 min·Whole Class

Solution Design: Reduce and Reuse Campaign

Individuals sketch posters promoting device repair or donation. Incorporate stats from prior activities. Display and vote on top ideas for school policy.

35 min·Individual

Real-World Connections

• Environmental engineers at recycling plants, like those operated by Veolia or Suez, design systems to safely dismantle electronics, recovering valuable materials and preventing toxic components from entering landfills.
• Policy makers in local councils, such as the City of London Corporation, develop waste management strategies that include specific collection points and campaigns to reduce household e-waste and promote responsible disposal.
• Product designers at technology companies like Apple or Samsung are increasingly exploring modular designs and using recycled materials to extend product life and reduce the environmental footprint of their devices.

Assessment Ideas

Exit Ticket

Provide students with three images: a landfill, a factory producing electronics, and a pile of old phones. Ask them to write one sentence explaining how each image relates to e-waste and its environmental cost.

Quick Check

Ask students to complete a short true/false quiz with statements like: 'All e-waste is safely recycled in the UK.' or 'Incinerating e-waste always releases harmful gases.' Review answers as a class, clarifying misconceptions.

Discussion Prompt

Pose the question: 'If you were designing a new phone, what three features would you include to reduce its environmental impact?' Facilitate a class discussion where students share their ideas and justify their choices.

Frequently Asked Questions

What is e-waste and why teach it in Year 6 Computing?

E-waste includes discarded gadgets whose production and disposal harm the environment through pollution and resource waste. In KS2 Computing, it develops digital literacy by linking technology use to real-world consequences, encouraging ethical decision-making alongside IT skills.

How can active learning help students understand e-waste?

Active methods like classroom audits and lifecycle simulations make distant issues immediate. Students handle real devices, track their impacts, and collaborate on solutions, deepening retention and motivation over passive lectures. This builds systems thinking vital for digital citizens.

What happens to old tablets and phones after disposal?

Many go to landfills, leaking toxins, or informal recyclers abroad who burn components unsafely. Proper channels shred for metals recovery, but low rates mean most contribute to pollution. Lessons use maps to trace paths, sparking reduction talks.

How to predict future e-waste impacts in class?

Provide growth graphs and consumption trends; students extrapolate using simple charts. Debates on scenarios like repair incentives versus new tech booms refine predictions. Ties to key questions, promoting data-driven environmental forecasting.