The Dark Years: World War II · Semester 2

Sustainability and NEWater

How technology and innovative policies help Singapore overcome its lack of natural resources, focusing on water and environmental sustainability.

About This Topic

This topic explores Singapore's commitment to sustainability and how technology helps the nation overcome its lack of natural resources. Students learn about the 'Singapore Green Plan 2030' and the innovative ways we manage our water and waste. The curriculum highlights NEWater as a prime example of how science can turn a challenge into a strength.

Students examine the importance of the '3Rs' (Reduce, Reuse, Recycle) and the goal of becoming a 'Zero Waste Nation'. This topic is essential for understanding the environmental challenges of the future and the role of every citizen in protecting the planet. It aligns with the MOE syllabus by teaching students about the link between technology, innovation, and environmental stewardship.

This topic comes alive when students can physically model the 'Circular Economy' through a simulation of waste management and a creative 'Upcycling' challenge.

Learning Objectives

• Explain the multi-stage process of NEWater production, from used water to high-grade reclaimed water.
• Analyze Singapore's strategies for waste reduction, including the '3Rs' and the concept of a circular economy.
• Evaluate the potential impact of the Singapore Green Plan 2030 on national water security and environmental quality.
• Compare Singapore's approach to water resource management with that of a country facing similar scarcity.
• Design a public awareness poster promoting one aspect of the Singapore Green Plan 2030.

Before You Start

Singapore's Resources and Challenges

Why: Students need a foundational understanding of Singapore's limited natural resources, particularly land and water, to appreciate the context of sustainability efforts.

Basic Concepts of Water Treatment

Why: Prior knowledge of simple water purification methods helps students grasp the complexity and innovation involved in NEWater production.

Introduction to Environmental Issues

Why: Familiarity with general environmental concerns like pollution and waste disposal provides a basis for understanding the goals of the Singapore Green Plan.

Key Vocabulary

NEWater	High-grade reclaimed water produced through advanced treatment processes, significantly contributing to Singapore's water supply.
Water Security	The ability of a population to access sufficient quantities of clean water to sustain their health, livelihoods, and socio-economic development.
Circular Economy	An economic system aimed at eliminating waste and the continual use of resources, contrasting with the traditional linear 'take-make-dispose' model.
Singapore Green Plan 2030	A national movement to rally Singaporeans around a shared vision for a sustainable future, with concrete targets for 2030.
Upcycling	The process of converting waste materials or unwanted products into new materials or products of better quality or environmental value.

Active Learning Ideas

Simulation Game: The Zero Waste Challenge

Students are given a 'bin' of mixed 'waste' (classroom items). They must sort them into 'Recycle,' 'Reuse,' and 'Waste' categories as quickly as possible, then brainstorm how to turn the 'Waste' items into something useful (Upcycling).

⏱ 40 min·Small Groups

Generate mission

Inquiry Circle: The NEWater Journey

Groups are given a diagram of the NEWater process. They must 'act out' the different stages (Microfiltration, Reverse Osmosis, UV Disinfection) using simple props, explaining how each step makes the water cleaner.

⏱ 45 min·Small Groups

Generate mission

Think-Pair-Share: My Green Promise

Students discuss in pairs one thing they can change in their daily life to help Singapore reach its 'Green Plan 2030' goals (e.g., using less plastic, saving electricity). They share their 'promise' with the class.

⏱ 20 min·Pairs

Generate mission

Real-World Connections

Engineers at the Public Utilities Board (PUB) design and operate the advanced treatment plants that produce NEWater, ensuring a reliable water supply for millions.

Waste management professionals at SembWaste work on implementing recycling programs and exploring new technologies to divert waste from landfills, supporting Singapore's Zero Waste Nation goal.

Urban planners and policymakers collaborate on initiatives like the Singapore Green Plan 2030, which guides development towards more sustainable housing, transport, and energy systems.

Watch Out for These Misconceptions

Common Misconception

Recycling is the only way to help the environment.

What to Teach Instead

Reducing and Reusing are actually more important because they prevent waste from being created in the first place. A 'Zero Waste Challenge' helps students prioritize 'Reducing' over just 'Recycling'.

Common Misconception

Singapore is too small to make a difference in global warming.

What to Teach Instead

By being a leader in green technology, Singapore can show other cities how to be sustainable. Peer discussion about 'The NEWater Journey' helps students see that our innovations can inspire the whole world.

Assessment Ideas

Exit Ticket

On an index card, ask students to write: 1. One sentence explaining how NEWater helps Singapore. 2. One example of the '3Rs' in action at home or school. 3. One question they still have about sustainability.

Discussion Prompt

Pose the question: 'Imagine Singapore had no NEWater. What are two major challenges the country might face?' Facilitate a class discussion, encouraging students to connect their answers to water security and daily life.

Quick Check

Present students with images of different waste items (e.g., plastic bottle, old t-shirt, food scraps). Ask them to classify each item as 'Reduce', 'Reuse', 'Recycle', or 'Upcycle' and briefly explain their choice.

Frequently Asked Questions

What is the Singapore Green Plan 2030?

The Green Plan 2030 is a national roadmap to make Singapore more sustainable. It includes goals like planting one million more trees, reducing the waste sent to our landfill by 30%, and making sure all our cars run on cleaner energy like electricity.

What is NEWater and why is it special?

NEWater is high-grade reclaimed water produced from treated used water. It is special because it uses advanced technology to make the water even purer than tap water. It shows how Singapore uses 'innovation' to ensure we always have enough water, even without natural sources.

How can active learning help students understand sustainability?

Active learning, like the 'Zero Waste Challenge,' helps students see that sustainability is about 'choices.' When they have to physically sort and upcycle waste, they realize that 'trash' is often just a resource in the wrong place. This hands-on approach makes the abstract concept of a 'circular economy' feel like a fun and achievable goal.

What is Semakau Landfill?

Semakau Landfill is Singapore's only landfill, located on an offshore island. It is special because it is built in a way that protects the surrounding coral reefs and mangroves. However, it is filling up fast, which is why we must all work hard to reduce our waste.