UNIT 1
Students examine Earth’s four interrelated systems: atmosphere, biosphere, hydrosphere, and lithosphere. They explore interactions shaping ecosystems, influencing plant productivity, soil fertility, water, and air quality. Historical geological and environmental changes are analyzed to predict future impacts. The unit emphasizes how natural and human-induced changes affect ecosystems and supports responsible environmental management and sustainable solutions.
UNIT 2
Students study pollution’s impact on Earth’s systems and how it affects food and water security. They examine pollutants in air, soil, water, and living organisms, and their effects on soil biodiversity and plant health. The unit highlights environmental challenges related to pollution, emphasizing the complexity of sustaining food and water supplies for current and future generations. Students explore assessment and management strategies to minimize pollution and promote sustainability.
All assessments in Units 1 and 2 are school-based. Tasks may include a fieldwork report, case study, or practical activity report involving primary data collection. Students may submit annotations of practical work, research investigations using secondary data, or models of Earth systems. Assessment can also involve logbooks, data analysis with conclusions, media responses, and problem-solving related to environmental science.
Tests may include multiple-choice, short answer, or extended responses. Reflective journals or blogs on activities or issues are included. A student-designed investigation report exploring scientific applications for sustaining Earth’s capacity, such as pollutant management or food and water security, may also be required.
UNIT 3
Students focus on sustainability principles in environmental management. They explore biodiversity’s value and ecosystem services vital to human health. Threats to biodiversity are analyzed alongside management strategies for endangered species. Case studies illustrate the application of sustainability concepts and Earth systems thinking in conservation efforts. The unit integrates environmental science perspectives on balancing development and ecosystem preservation.
UNIT 4
Students explore climate variability and its impacts on ecosystems and society at multiple scales. They compare renewable and non-renewable energy sources, evaluating availability, reliability, efficiency, and sustainability. The unit emphasizes data interpretation, prediction testing, and understanding uncertainty in environmental indicators. Students consider how science informs responsible decision making to manage climate change and human energy impacts.
Practical work is essential, with tasks including written reports, multimodal presentations or written responses to questions based on fieldwork or other data. Students evaluate sustainability principles and environmental management practices. A key component is a student-designed scientific investigation involving the collection of primary data related to biodiversity, environmental management, climate change, or energy use. This investigation demonstrates application of scientific skills and understanding in real-world environmental contexts.
The level of achievement for Units 3 and 4 is also assessed by an end-of-year examination.