Lesson Notes By Weeks and Term v5 - Grade 9

Lesson Video

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Performance objectives

• Define sustainability in the context of technology.
• Analyze the impacts of technology on South African society and environment.
• Evaluate technological solutions for environmental challenges.
• Apply sustainable design principles to technologies.
• Explain the importance of responsible e-waste management.

Lesson summary

This week, we delve into the crucial relationship between technology, society, and the environment, with a specific focus on sustainable practices. In South Africa, where we face unique challenges related to resource management, access to technology, and environmental protection, understanding this relationship is paramount. From water scarcity to energy needs and the impact of manufacturing, the choices we make about technology directly affect our communities and the natural world around us. This understanding will empower you to make informed decisions and contribute to a more sustainable future for our country.

Lesson notes

2. 1.

Sustainability: The Core Concept Sustainability, in simple terms, means meeting our own needs without compromising the ability of future generations to meet their own needs.

This encompasses three key pillars: Environmental Sustainability: Protecting our natural resources, ecosystems, and biodiversity. This includes reducing pollution, conserving water, and preventing deforestation.

Social Sustainability: Ensuring social equity, justice, and well-being for all members of society. This means fair access to resources, education, healthcare, and opportunities.

Economic Sustainability: Creating economic systems that are stable, equitable, and do not deplete natural resources. This includes promoting sustainable industries, reducing waste, and supporting local economies. These three pillars are interconnected and must be considered together. A technologically advanced solution that pollutes the environment, even if it creates jobs, is not sustainable. 2.

2. Impacts of Technology on the Environment Technology can have both positive and negative impacts.

Negative Impacts: Pollution: Manufacturing processes often release pollutants into the air, water, and soil. Think of the air quality issues around some industrial areas in Gauteng or the water pollution caused by mining activities in various parts of the country.

Resource Depletion: Extracting raw materials for technology (e.g., mining for metals needed in smartphones) can deplete natural resources and damage ecosystems. For example, rare earth minerals used in electronics are often mined in environmentally damaging ways.

E-waste: Discarded electronics (computers, phones, appliances) contain hazardous materials that can contaminate the environment if not disposed of properly. South Africa faces a growing e-waste problem, often exacerbated by informal recycling practices.

Energy Consumption: Many technologies require significant energy, often generated from fossil fuels, contributing to climate change. The reliance on coal-fired power stations in South Africa is a prime example of this.

Positive Impacts: Renewable Energy Technologies: Solar panels, wind turbines, and hydroelectric power offer cleaner alternatives to fossil fuels. South Africa is investing in renewable energy projects to reduce its carbon footprint.

Precision Agriculture: Using technology to optimize irrigation, fertilization, and pest control can reduce water consumption and chemical use in farming.

Environmental Monitoring: Sensors and data analysis tools can help us monitor pollution levels, track deforestation, and manage natural resources more effectively.

Recycling Technologies: Advanced recycling technologies can recover valuable materials from waste, reducing the need for new resource extraction. 2.

3. Impacts of Technology on Society Technology profoundly shapes our society, for better or worse.

Positive Impacts: Improved Communication and Connectivity: Mobile phones and the internet connect people across geographical boundaries, fostering social interaction and access to information. Increased Access to Education and Healthcare: Online learning platforms and telemedicine can reach remote communities and improve access to essential services.

Economic Growth and Job Creation: Technological innovation can drive economic growth and create new jobs in sectors such as software development, renewable energy, and advanced manufacturing.

Improved Efficiency and Productivity: Automation and other technologies can increase efficiency and productivity in various industries, leading to economic benefits.

Negative Impacts: Job Displacement: Automation can lead to job losses in certain sectors, requiring workers to acquire new skills.

Digital Divide: Unequal access to technology can exacerbate existing inequalities, creating a "digital divide" between those who are connected and those who are not. This is a significant issue in South Africa, particularly in rural areas.

Privacy Concerns: The increasing collection and use of personal data raise concerns about privacy and security.

Social Isolation: Excessive use of technology can lead to social isolation and mental health problems, especially among young people. 2.

4. Sustainable Design Principles Sustainable design aims to minimize the environmental impact of products and processes throughout their entire life cycle – from raw material extraction to disposal.

Key principles include: Reduce: Minimize the use of materials and energy.

Example: Designing a phone that uses less rare earth minerals.

Reuse: Design products that can be reused multiple times.

Example: Designing durable and repairable appliances.

Recycle: Use materials that can be easily recycled.

Example: Using aluminum instead of non-recyclable plastics in packaging.

Rethink: Challenge existing assumptions and find innovative solutions.

Example: Designing a product-as-a-service model, where customers rent instead of owning.