Computer Science · Grade 10 · Impacts of Computing on Society · Term 3

Environmental Impacts of Computing

Investigate the environmental footprint of computing, including energy consumption, e-waste, and sustainable practices.

• Ontario Curriculum Expectations
• CS.HS.S.12
• CS.HS.S.13

About This Topic

Students investigate the environmental footprint of computing, including massive energy consumption by data centers and digital devices, challenges of electronic waste disposal, and practical sustainable strategies. They analyze data showing data centers use up to 3% of global electricity, comparable to aviation, and explore how device manufacturing relies on rare earth minerals with high ecological costs. Tracing e-waste lifecycles reveals improper disposal leads to soil and water pollution from toxins like lead and mercury.

This topic fits the Ontario Grade 10 Computer Science curriculum's focus on societal impacts, aligning with standards CS.HS.S.12 and CS.HS.S.13. It develops skills in data interpretation, ethical evaluation, and solution design, while connecting computing to broader sustainability goals in science and civics courses. Students gain awareness of how their digital habits contribute to climate challenges.

Active learning excels for this topic because abstract statistics become personal through footprint calculators and waste audits. Collaborative projects, such as redesigning device packaging, build ownership and problem-solving skills, turning passive knowledge into committed action.

Key Questions

1. Analyze the energy consumption associated with data centers and digital devices.
2. Explain the challenges posed by electronic waste (e-waste) and its disposal.
3. Propose sustainable practices for reducing the environmental impact of computing.

Learning Objectives

• Analyze the energy consumption patterns of data centers and personal computing devices.
• Evaluate the environmental hazards associated with the disposal of electronic waste.
• Propose specific, actionable strategies for reducing the environmental impact of computing throughout a device's lifecycle.
• Compare the ecological costs of manufacturing different types of computing hardware.
• Critique current e-waste management policies and suggest improvements.

Before You Start

Introduction to Computer Hardware

Why: Students need a basic understanding of computer components to grasp the materials and energy involved in their production and disposal.

Basic Concepts of Energy Consumption

Why: Familiarity with how energy is measured and used is necessary to understand the scale of energy consumption by digital devices and data centers.

Key Vocabulary

E-waste	Discarded electronic devices and their components, often containing hazardous materials that require special disposal methods.
Carbon Footprint	The total amount of greenhouse gases, including carbon dioxide and methane, generated by our actions, in this case, related to computing.
Data Center	A large facility that houses many computer servers and related equipment, consuming significant amounts of energy for operation and cooling.
Resource Depletion	The consumption of natural resources, such as rare earth minerals used in electronics, faster than they can be replenished.
Circular Economy	An economic model focused on eliminating waste and the continual use of resources, contrasting with the traditional linear model of 'take, make, dispose'.

Watch Out for These Misconceptions

Common Misconception

Data centers have minimal environmental impact because they run on clean energy.

What to Teach Instead

Most rely on fossil fuels, contributing significantly to emissions; graphing real energy source data in groups helps students see the scale and push for renewables. Peer discussions refine their understanding of supply chain realities.

Common Misconception

E-waste disappears through recycling in Canada.

What to Teach Instead

Only 20% is recycled domestically, with much exported to landfills; hands-on sorting of sample e-waste reveals toxic components and motivates research into local programs. Collaborative mapping exposes global inequities.

Common Misconception

Individual computing habits do not affect the environment.

What to Teach Instead

Personal use aggregates to billions of devices; self-audits quantify impacts, showing how small changes multiply, fostering agency through shared class data visualizations.

Active Learning Ideas

Footprint Audit: Personal Device Energy Tracker

Students log their weekly device usage on a shared Google Sheet, calculate energy estimates using provided formulas or online calculators, and graph class totals. Groups compare results to national averages and propose one reduction tip each. Share via class presentation.

45 min·Small Groups

Lifecycle Stations: E-Waste Exploration

Set up stations for mining impacts (videos and mineral samples), manufacturing (infographics), use/disposal (real e-waste disassembly), and recycling myths (case studies). Groups rotate, noting key challenges at each, then map a full device lifecycle on posters.

50 min·Small Groups

Design Challenge: Sustainable App Prototype

Pairs brainstorm and sketch an app feature that promotes low-energy computing, like usage reminders or sharing tools. Use paper prototypes or free tools like Figma to build, test with peers, and pitch environmental benefits.

60 min·Pairs

Debate Carousel: Data Center Dilemmas

Divide class into teams to research and debate topics like cloud vs. local storage energy use or right-to-repair policies. Rotate positions midway, vote on strongest arguments, and compile class recommendations.

40 min·Whole Class

Real-World Connections

• Environmental engineers working for tech companies like Google or Microsoft design energy-efficient cooling systems for data centers to reduce their electricity consumption and carbon footprint.
• Recycling facilities, such as those operated by Sims Municipal Recycling, process millions of pounds of e-waste annually, recovering valuable materials and preventing toxic substances from entering landfills.
• Consumers purchasing refurbished laptops or smartphones from companies like Back Market contribute to a circular economy, extending the lifespan of electronics and reducing demand for new manufacturing.

Assessment Ideas

Quick Check

Present students with three scenarios: (1) A student leaves their laptop on overnight, (2) A company upgrades its servers every two years, (3) A person throws an old smartphone in the regular garbage. Ask students to identify the primary environmental impact for each scenario and briefly explain why.

Discussion Prompt

Facilitate a class discussion using the prompt: 'Imagine you are advising a school board on purchasing new computers. What are the top three environmental considerations you would emphasize, and why are they important?' Encourage students to reference energy use, e-waste, and material sourcing.

Exit Ticket

On a small card, have students write down one specific action they can take to reduce their personal computing carbon footprint and one question they still have about managing e-waste.

Frequently Asked Questions

What stats should I use for data center energy consumption?

Share that data centers consumed 460 TWh globally in 2022, projected to double by 2026, per IEA reports. Ontario examples like Toronto's facilities using grid power highlight local relevance. Students graph these against household or aviation use to grasp scale, connecting to curriculum data analysis skills.

How do I teach e-waste disposal challenges effectively?

Focus on the 53 million metric tons of e-waste yearly, with under 20% recycled, via Basel Convention data. Use infographics on toxins leaching into water. Activities like lifecycle posters make disposal vivid, prompting discussions on policies like extended producer responsibility.

How can active learning help students grasp environmental impacts of computing?

Active approaches like device audits and e-waste dissections make distant issues tangible, as students calculate their own footprints or handle real components. Group debates on sustainability build critical thinking, while prototypes encourage innovation. These methods boost retention by 75% over lectures, per education research, and inspire real habit changes.

What sustainable practices can students adopt from this topic?

Encourage power-saving settings, device repair over replacement, and e-waste drop-offs at certified centers. Class pledges track progress. Introduce right-to-repair and open-source software to cut redundancy. Projects designing low-energy apps reinforce these, aligning with curriculum goals for responsible computing.