Teaching ‘Green computing’ for Grade 10

This content is located in CAPS under Social Implications: Environmental Issues for Grade 10.

Green computing is an important topic for fostering responsible technology use among learners. It introduces the concept of reducing environmental impact through sustainable computing practices, addressing issues like energy consumption, e-waste, and recycling. By contextualising these practices, learners can connect technology usage to global environmental concerns and actively consider their role in creating a greener future.

Green computing, as outlined in CAPS, encourages students to understand and implement sustainable practices such as recycling and e-waste management. Let’s explore practical ways to bring this to life in your classroom.

Making Green Computing Real in the Classroom

1. Energy-efficient Practices
   • Simulate Real-world Scenarios: Create a classroom activity where learners calculate the energy consumption of typical devices (computers, monitors, printers) used at school. Use wattage labels on devices and electricity rates to demonstrate real costs and their environmental impact.
   • Power-saving Competitions: Set up a “Power-Saving Week” where students compete to identify and implement strategies to reduce energy use at home or school, such as using sleep mode, shutting down unused devices, or adjusting brightness settings.
2. E-waste Awareness
   • Explore a Case Study: Discuss examples of e-waste management policies in South Africa or other countries. Show how improper disposal of e-waste harms the environment and health.
   • DIY Recycling Station: Have students create a mini-recycling station for old batteries, USBs, and other small devices in your classroom or school. Work with local e-waste companies to arrange a drop-off for these items.
3. Recycling Initiatives
   • Recycled Tech Projects: Organise a project where learners disassemble old, non-functioning electronics (such as an outdated keyboard or mouse). They can separate the components into plastics, metals, and reusable parts, learning about the materials used in devices.
   • Creative Upcycling: Challenge learners to create something functional or decorative using old tech components. For example, turn old CDs into coasters or use keyboard keys to make art.
4. Interactive Learning Tools
   • Carbon Footprint Calculator: Guide students to use online tools that estimate their digital carbon footprint. Discuss how activities like streaming, emailing, and device usage contribute to their footprint and brainstorm ways to minimise it.
   • Gamify Green Computing: Introduce games or simulations where learners make decisions about computing practices and see their impact on the environment. For example, they can “build” an eco-friendly computer system with limited resources.
5. Green Policies at School
   • Develop a School Green Charter: Let students draft a green computing policy for the school. Include guidelines such as switching off devices after use, recycling printer cartridges, and limiting unnecessary printing.
   • Monitor and Advocate: Set up a group project where learners audit current school practices related to computing and suggest areas for improvement. They could create posters to raise awareness among peers.
6. Guest Speakers and Field Trips
   • Invite Experts: Bring in an environmental expert or a representative from an e-waste company to discuss the challenges and solutions in e-waste management.
   • Field Trip to a Recycling Facility: Organise a visit to a local recycling centre where students can see how e-waste is processed and learn about its impact on reducing landfill waste.

Integrating Bloom’s Taxonomy

• Remembering: Ask students to define green computing, list examples of e-waste, or identify ways to conserve energy.
• Understanding: Discuss the reasons for green computing and how it impacts the environment.
• Applying: Students calculate energy costs or create recycling stations.
• Analysing: Compare the environmental effects of different computing practices.
• Evaluating: Debate the effectiveness of local e-waste policies or school-wide energy-saving initiatives.
• Creating: Develop innovative recycling projects or draft school green policies.

Green computing isn’t just a theory—it’s a call to action for students to make a tangible difference. By teaching this topic through interactive and practical activities, you empower learners to become environmentally conscious digital citizens.

What are your favourite ways to teach green computing? Share your ideas or experiences in the comments below—I’d love to hear from you!