Ecosystem Exploration

Overview

Students explore a local ecosystem outdoors, observe living things and their habitats, and connect organisms’ roles to interdependence within the ecosystem. They practise scientific field observations and respectful consideration of Indigenous knowledge and perspectives about land.

Learning intentions

• Students will identify common organisms in a local ecosystem (plants, insects, birds, amphibians, fungi or other visible life).
• Students will describe how organisms depend on each other and on non-living factors such as water, light, soil, temperature and shelter.
• Students will record observations using clear, science-based notes (tables, labels, sketches).
• Students will discuss how humans can affect ecosystem balance and how learning from Indigenous relationships with land can guide respectful stewardship.

Success criteria

• I can use observation evidence to describe at least 6 organisms and their likely needs (food, water, shelter, space).
• I can explain (in my own words) at least 2 interdependence relationships (for example: producer/consumer, predator/prey, pollinator/flower, decomposer/nutrients).
• I can use a field notebook method (labels, measurements or counts, and date/time) to support my claims.
• I can participate respectfully in discussion using evidence from observations.

Curriculum links

• Competency: Developing a science and technology inquiry through observation, data recording and interpreting evidence.
• Competency: Explaining science phenomena using scientific ideas about ecosystems and interdependence.
• Content: Ecosystems as systems where living things interact with one another and with non-living factors.
• Content: Human-environment relationships, including responsible actions that reduce negative impacts.

Lesson structure ({total minutes})

1. 0–5 min: Launch and field expectations

• Briefly revisit Lesson 1 ideas: ecosystems include living and non-living parts, and organisms have roles. Set outdoor norms (stay with the group, no touching without instruction, leave no trace).
• Introduce the day’s goal: “Observe → record evidence → explain relationships.”

2. 5–10 min: Safety + Indigenous land-respect reflection

• Give clear safety rules for the route (watches, phones away unless recording, careful crossings, allergen awareness).
• Ask students to reflect: “How can we be good guests in the ecosystem and in the spaces where knowledge is shared?” Emphasize respectful listening and careful observation.

3. 10–18 min: Teacher modelling—how to observe scientifically

• Model a quick observation routine: scan the area, choose a micro-site, record date/time, describe habitat features (soil type, moisture, canopy/coverage, nearby water).
• Demonstrate at least one method: count signs (tracks, feeding marks), estimate abundance, and sketch with labels (plant leaves, insect types, nest/holes, water edges).
• Highlight “evidence vs. guesses” (e.g., “I saw” vs “I think it needs…”).

4. 18–35 min: Outdoor exploration in small groups

• Groups of 2–3 rotate through 2 short observation stations or follow a guided route.
• At each stop, students record:
• 3–4 organisms they can identify or classify (common name or “unknown—take a note of features”).
• 2 non-living factors (example: moisture level, sunlight shade, temperature feel, wind exposure).
• 1 possible role or interaction using sentence stems: “This organism likely needs…”, “It may interact with… by…”.
• Teacher circulates, prompts evidence (“What did you see?”) and helps students link organisms to habitat needs.

5. 35–45 min: Whole-class data share—build an interaction web

• On chart paper or a digital board, compile organisms observed (use simple categories if identification is uncertain).
• Teacher draws an ecosystem interaction web: connect organisms to roles and non-living factors.
• Students justify each connection with at least one observation note.

6. 45–55 min: Explanation writing—short claim/evidence

• Students choose one interdependence relationship from the web and write a 6–8 sentence explanation:
• Claim about the relationship
• Evidence from field observations
• Reasoning using ecosystem ideas (needs, roles, habitat)
• A sentence about how human choices might protect or disrupt it
• Provide a template for students who need structure.

7. 55–60 min: Exit ticket—check for understanding

• Students complete a quick exit ticket:
• Name one living thing and one non-living factor from today.
• State one relationship in the ecosystem (who depends on whom or what supports life).
• Collect field notebooks or observation sheets.

Resources

• Field notebooks or pre-made observation sheets (with date/time, habitat section, organism table, sketch space).
• Clipboards, pencils, and erasers.
• Simple measuring tools if available (ruler for leaf size, string for rough area, optional thermometer/hygrometer).
• Identification support: printed local ecosystem cards or a class poster for common species categories (plants/insects/birds).
• Gloves and hand sanitizer (teacher-managed) if required; reminder about “no unnecessary touching.”
• Chart paper or board markers for the interaction web.
• Optional: magnifiers, binoculars (only if school policy allows and teacher provides guidance).

Assessment

• Observation evidence: review field notes for completeness (organisms, habitat factors, sketches/labels, counts or descriptions).
• Reasoning: evaluate the short claim/evidence explanation for a clear relationship and a link to observed evidence.
• Exit ticket: check that students identify both living and non-living factors and can state an interdependence relationship.

Differentiation

• Support for learners needing scaffolds:
• Sentence stems for recording and explaining interactions (example: “I observed…”, “This organism needs…”, “So it depends on…”).
• A checklist version of the observation sheet with fewer required entries.
• Pre-printed organism categories for students who can’t identify species names confidently.
• Extension for advanced learners:
• Ask for a more precise role (producer/consumer/decomposer) and one additional interaction type (pollination, decomposition, shelter).
• Challenge students to link two non-living factors to organism distribution (for example: shade and moisture).
• EAL learners:
• Use visuals (icons for habitat factors, word bank with common ecosystem terms).
• Allow oral explanation with a partner before writing; provide translated word banks if available.
• SEN support:
• Offer a “micro-task” role in the group (sketcher, counter, habitat describer, recorder of evidence).
• Provide reduced writing requirements while keeping scientific reasoning expectations.