You will learn
- Define ecosystem.
- Sort biotic and abiotic.
- Describe interactions.
- Study a local ecosystem.
Version 0.2 · expanded edition · built from cited public sources Content is based on the official frameworks and sources listed under Sources and standards. No official endorsement is claimed. Written in the style of common primary school assessments. No exam result is promised.
Student lesson
- Ecosystems have living and non-living parts.
- Living things interact with each other.
- Abiotic factors include sunlight, water and soil.
- Ecosystems can be big or small.
Words to know
living things and their non-living surroundings working together
living
non-living
all the living things in one place
1. Discover: The school pond
Yaw visits the school pond. He finds water, mud and sunshine (abiotic), and fish, frogs, snails and water plants (biotic). “Every part depends on others,” says his teacher.
Think: What happens if the water dries up?
2. Understand: Ecosystems
Idea 1: Two parts
An ecosystem has biotic parts (plants, animals, fungi, microbes) and abiotic parts (sunlight, water, air, soil, temperature).
Idea 2: Interactions
Living things eat, shelter, compete and cooperate. Plants use sunlight and water; animals eat plants; decomposers recycle.
Idea 3: Sizes
A puddle, a pond, a forest and the ocean are ecosystems. A community is the living part only.
3. Worked examples
Example 1 (I show you): Sort
Sunlight.
- Non-living.
- Abiotic.
- Energy.
Answer: Abiotic.
Example 2 (We do it together): Sort
Frog.
- Living.
- Biotic.
- Animal.
Answer: Biotic.
Example 3 (You try): Explain
Dry pond.
Show the steps and answer
- No water.
- Life affected.
- Loses.
Answer: Living things suffer.
Did you know?
A single teaspoon of healthy soil can hold more living organisms than there are people on Earth.
Why this matters
Understanding ecosystems helps us protect nature.
4. Explore: Ecosystem survey
Study a school garden square with a hand lens, list biotic and abiotic items and draw the links.
- Mark a square.
- Look carefully.
- List living and non-living.
- Draw links.
Think about it: what did you notice?
What did you notice? Every living thing needed sunlight, water or soil.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- An ___ is living things and their surroundings.
- ___ means living.
- ___ means non-living.
- A ___ is all the living things in one place.
Guided practice
Question 1. What is an ecosystem?
Living and non-living.
Question 2. What is biotic?
Living.
Question 3. What is abiotic?
Non-living.
Independent practice
Level 1: Start
- What is an ecosystem?
- What is biotic?
- What is abiotic?
- Name an abiotic factor.
- Name a biotic factor.
Level 2: Grow
- Why interactions?
- Why survey?
- Why protect?
Level 3: Stretch
- Do the survey.
- Draw links.
- Explain.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Explain how a pond is an ecosystem.
Show a sample answer
Name biotic and abiotic parts.
Another one. Tell a family member one thing from this lesson. Use the words you learned.
Show a sample answer
A clear sentence that uses at least one word from Words to know.
7. Common mistakes
Fix: Plants and soil too.
Fix: Essential.
8. Lesson summary and revision card
- I can define ecosystem.
- I can sort biotic and abiotic.
- I can describe interactions.
- I can study a local ecosystem.
9. Check and master
Answer all 14 questions. You will see feedback after each one.
Your result appears here after you answer every question.
10. Key takeaways
- Ecosystems have living and non-living parts.
- Living things interact with each other.
- Abiotic factors include sunlight, water and soil.
- Ecosystems can be big or small.
11. Next lesson
Next lesson: Producers. Keep going with the next idea in this course.
Exam practice
These questions are written in the style of common school and international primary assessments. Try them on your own, without looking back. Then check your answers in the marking guide. The marks are shown in brackets.
- Define ecosystem, biotic and abiotic. [3 marks]
- Sort four items. [4 marks]
- Explain one interaction. [1 mark]
- Safety rule. [2 marks]
Total: 10 marks.
Marking guide and model answers
- 1 each
- 1 each
- Example
- Any [1]; reason [1]
Score guide: 9 to 10 = secure. 6 to 8 = nearly there, revise the parts you missed. Under 6 = work through the lesson again with a grown-up.
Printable worksheet
- What is an ecosystem?
- What is biotic?
- What is abiotic?
- Name an abiotic factor.
- Name a biotic factor.
- Why interactions?
- Why survey?
- Why protect?
- Do the survey.
- Draw links.
Homework
List five biotic and five abiotic things near your home.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. What is an ecosystem? | Living and non-living. | 1 |
| 2. What is biotic? | Living. | 1 |
| 3. What is abiotic? | Non-living. | 1 |
| 4. Name an abiotic factor. | Sunlight. | 1 |
| 5. Name a biotic factor. | Frog. | 1 |
| 6. Why interactions? | Dependence. | 1 |
| 7. Why survey? | Learn. | 1 |
| 8. Why protect? | Connected. | 1 |
| 9. Do the survey. | Table. | 1 |
| 10. Draw links. | Diagram. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Living and non-living.; 2 Living.; 3 Non-living.; 4 Sunlight.; 5 Frog.. Level 2: 1 Dependence.; 2 Learn.; 3 Connected.. Level 3: 1 Table.; 2 Diagram.; 3 Sentence..
Quiz answers: 1 B, 2 C, 3 A, 4 B, 5 C, 6 A, 7 B, 8 C, 9 A, 10 B, 11 C, 12 A, Challenge 1 B, Challenge 2 C.
Mastery and remediation
| Objective | Bronze (Developing) | Silver (Proficient) | Gold (Advanced) |
|---|---|---|---|
| O1 Define ecosystem | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O2 Sort biotic and abiotic | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O3 Describe interactions | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
| O4 Study a local ecosystem | Shows this with help from an adult or a picture | Does this independently and explains how they know | Explains it clearly and uses it in a new situation |
Courseversity badge thresholds (overall quiz score): Gold = 90–100%; Silver = 80–89.9%; Bronze = 70–79.9%. A badge is never a full record of progress.
If a learner struggles
- Find the misconception: “Ecosystems only have animals.” Plants and soil too.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Describe an ecosystem.
- Guided practice: work through one example together and let the learner try the next one.
- Reassess: use the quiz again or the worksheet.
- Move on when the learner shows Silver-level evidence independently.
For parents and guardians
In this lesson your child surveys an ecosystem. You do not need to be an expert to help.
- Explore a garden.
- Ask “What depends on what?”
- Respect wildlife.
- Ask “how do you know?” after each answer, and listen.
- Praise effort, not only right answers. Mistakes are how we learn.
- Ten to fifteen minutes a day is better than one long session.
Teacher package
1–5. Objectives, prerequisites, materials, preparation, duration
Lesson objectives. Learners will: define ecosystem; sort biotic and abiotic; describe interactions; study a local ecosystem.
Prerequisite knowledge. Grade 4 ideas: habitats, simple food chains, producers and consumers, and adaptations of living things.
Materials. Hand lens, gloves. Low-resource options: use chalk or charcoal on a board or wall, drawings in the sand, and objects from the classroom instead of printed materials.
Preparation. Plan a garden visit.
Suggested duration. 45–60 minutes. It can be split into two shorter sessions.
6–9. Teaching procedure, explanation notes, guided and independent activities
Introduction (5 min). Look at a garden picture and ask, “What is living? Not living?”
Explanation (10 min). Teach ecosystems.
Guided activity (10 min). Learners survey.
Independent activity (10 min). Learners explain.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. Living or not? How connected?
Teacher explanation notes. Start with real objects and safe, hands-on observation. Then talk about what was seen, then draw and write. Always say “how do you know?”. Keep to the safety notes, and use local, safe materials.
10–12. Differentiation, formative assessment, common misconceptions
Support. Use real objects and pictures, short sentences and a partner. Let learners point, show or draw instead of writing. Extension. Ask learners to find a new example at home and explain how they know.
Formative assessment. Listen to learners read and explain, ask “how do you know?”, and check the independent work.
Misconceptions. “Ecosystems only have animals.” Plants and soil too.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz, the 10-mark exam practice and the worksheet on this page. All answers and marking guides are in the answer sections above. Re-check every answer before use.
16–19. Remediation, enrichment, homework, teacher reflection
Remediation. Describe an ecosystem. Enrichment. Look for one new example near your home or school, draw it and explain it to someone. Homework. See above.
Teacher reflection. After teaching, record: which ideas learners understood; which misconceptions occurred; which activities worked; which learners need more practice; and what to improve next time.
Sources and standards
This lesson is based on the sources below, and no official endorsement is claimed. Reference starting points: Next Generation Science Standards, Cambridge Primary Science and the IB Primary Years Programme. Where a standard code is named, it points to the official framework.
Research used to shape this lesson. Courseversity Science curriculum, Grade 5 Unit 8, topic 1; Next Generation Science Standards, ecosystems: interactions, energy and dynamics; Cambridge Primary Science Stage 5, biology: living things in their environment; IB Primary Years Programme, sharing the planet. These sources informed the lesson.