Begin the lesson by introducing the concept of producers and their role in ecosystems. Use engaging questions to stimulate curiosity, such as 'What do plants eat?' or 'How do underwater plants survive?'

Explain the process of photosynthesis and its significance in both terrestrial and marine ecosystems. Highlight the roles of land-based plants, phytoplankton, and seagrasses as primary producers.

Use the video 'Energy Flow in Ecosystems' to illustrate how producers create energy through photosynthesis and how this energy flows through the ecosystem.

Facilitate a discussion on the importance of photosynthesizing organisms in providing oxygen and supporting life on Earth. Encourage students to share examples of producers they know.

Watch the 'Ecosystem Organisation' video to understand how producers fit into the broader ecosystem structure, including their interactions with other organisms.

Have students create a model ecosystem in a shoebox, including representations of producers, consumers, and decomposers. Use materials like clay, paper, and natural items.

Use the 'Producers, Consumers and Decomposers' assessment to reinforce the roles of different organisms in the ecosystem.

Assign students to research a specific producer, such as a type of plant or phytoplankton, and create a short presentation about its role in the ecosystem.

Conduct a class discussion to review key concepts, asking students to explain the process of photosynthesis and the importance of producers in ecosystems.

Have students write a reflection on what they learned about producers and their significance in both terrestrial and marine ecosystems.

Use the 'Energy Flow in Ecosystems' assessment to evaluate students' understanding of the roles of producers, consumers, and decomposers.

Encourage students to explore further by researching the impact of climate change on producers and how it affects ecosystems globally.