Primary Production Systems

Overview

In this second lesson of Biodiversity on New Zealand Farms, students investigate how primary production systems connect land, water, living organisms and human management. They compare examples from Aotearoa New Zealand and use systems thinking to identify natural resources, products and management practices.

Learning intentions

• WALT describe how a primary production system connects land, water, living organisms and management practices.
• WALT identify natural resources and management practices in different production systems.
• WALT use evidence from examples to explain how products depend on natural resources.
• WALT communicate scientific ideas using a systems diagram and clear explanations.

Success criteria

• I can identify the land, water, living organisms and management practices in a production system.
• I can describe at least two links between components of a system.
• I can distinguish natural resources from management practices.
• I can compare the biodiversity opportunities and challenges of two production systems.

Curriculum links

• Biological Science — human activity can cause habitat destruction, pollution and climate change, threatening ecosystem stability and biodiversity.
• Biological Science — human activity can alter environments faster than some species can adapt, leading to biodiversity loss.
• Biological Science — interpreting data, graphs and maps to evaluate how human activity influences ecosystem stability and biodiversity.
• Biological Science — sustainable methods and practices can reduce or offset environmental impacts.

The lesson develops the Science capabilities of interpreting data and information, engaging with science, and communicating in science, alongside critical thinking and participating and contributing.

Lesson structure (45 minutes)

1. 0–5 min · Hook and prior learning. Open with the hook image and opening question showing a New Zealand farm, orchard or fish farm and ask, “What must this system take from the environment to produce food or materials?” Students complete a quick think-pair-share, then name one natural resource they used in the previous lesson or associate with biodiversity.

2. 5–12 min · Direct teaching: systems. Use the primary production systems diagrams to define a primary production system as connected inputs, living organisms, management practices and products. Model a dairy example: soil and pasture, rainfall and freshwater, cows and soil organisms, fertiliser and fencing, and milk. Explicitly distinguish natural resources (such as sunlight, soil, water and organisms) from management practices (such as irrigation, planting, pest control and harvesting). Students copy or annotate the model diagram on the primary production systems organiser.

3. 12–25 min · Case-study investigation. Give pairs one chunked case study from the primary production systems organiser: dairy, sheep and beef, cropping, orchards, forestry, fishing or aquaculture. Students highlight or sort the information into four categories: land, water, living organisms and management practices. They identify the product and draw arrows showing at least three connections, for example “rainfall → pasture → cows → milk”. Circulate and ask, “What would happen if this resource was reduced?” and “Which component is being managed by people?”

4. 25–34 min · Expert comparison. Regroup students so each new group contains different case studies. Each student explains their system in one minute, using their diagram. The group records similarities and differences between two systems, including one biodiversity opportunity and one biodiversity challenge. Use the comparison prompts to support discussion. Opportunities might include shelter belts, riparian planting, mixed habitats or responsible aquaculture; challenges might include habitat loss, water pollution, introduced species or overfishing.

5. 34–41 min · Independent application. Students complete the final section of the primary production systems organiser by writing or recording a short explanation: “A primary production system depends on natural resources because… Management practices can affect biodiversity by…” They must refer to two systems and include a clear cause-and-effect link. Students may respond in writing, orally to the teacher or as a labelled visual explanation.

6. 41–45 min · Plenary and exit check. Return to the plenary questions. Students answer on the back of the worksheet or verbally: “Name one natural resource, one management practice and one link between them.” Invite two students to share contrasting examples, then collect responses to identify misconceptions for the next lesson.

Resources

• the Primary Production Systems slide deck
• the primary production systems organiser
• Projector or interactive display
• Highlighters or coloured pencils
• Printed, chunked case-study sheets within the worksheet
• Device with text-to-speech and dyslexia-friendly digital text
• Board or shared digital workspace

Assessment

• During modelling, check whether students can correctly classify natural resources and management practices.
• During group explanations, listen for accurate links between land, water, organisms, management and products; question students who list components without explaining connections.
• Use the independent explanation and exit response to assess whether students can identify components, describe links and connect management practices with biodiversity impacts.

Differentiation

• Provide labelled diagrams, a four-colour classification key, a word bank and sentence starters such as “The system depends on…” and “This management practice may affect biodiversity because…”.
• Use chunked case studies with short paragraphs, clear headings and one system per page. Offer dyslexia-friendly digital text, sans-serif font, increased spacing and text-to-speech.
• Allow students to demonstrate understanding orally, visually or in writing. Pair students strategically and read case-study text aloud where useful.
• Support learners who need extension by asking them to compare the biodiversity opportunities and challenges of two production systems, then recommend one management change and justify it using ecosystem evidence.

Extension

• Compare two production systems in greater depth, considering which natural resources are most vulnerable and why.
• Design one sustainable management change for a chosen system and predict its possible benefits and trade-offs for production and biodiversity.