You will learn
- Name pollution types.
- Identify sources and effects.
- Measure pollution safely.
- Propose solutions.
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
- Pollution is harmful material or energy in the wrong place.
- Sources include vehicles, factories and waste.
- It harms health and ecosystems.
- Policy and personal action can reduce it.
Words to know
harmful substances or energy added to the environment
a substance that causes pollution
smoky fog from air pollution
a tiny piece of plastic under 5 mm
1. Discover: The river upstream
Fish are floating in the river downstream. Kwesi’s class travels upstream with their teacher and finds a drain pouring dirty water. “Pollution travels,” says Mr Dankwa. “Finding the source is the first step to stopping it.”
Think: Who should be told about it?
2. Understand: Pollution
Idea 1: Types
Pollution includes air (smoke, exhaust, smog), water (sewage, chemicals, oil), soil, noise, light and plastic waste. A pollutant is any harmful substance added to the environment.
Idea 2: Effects
Air pollution causes breathing problems; polluted water harms fish and drinking supplies; plastic harms animals and breaks into microplastics that enter food chains.
Idea 3: Solutions
Reduce, reuse and recycle; use clean transport and energy; treat waste water; ban or limit harmful products; clean up and report pollution. Laws and personal choices both matter.
3. Worked examples
Example 1 (I show you): Trace
Source to effect.
- Exhaust.
- Smog.
- Asthma.
Answer: Chain.
Example 2 (We do it together): Sort
Types.
- Air.
- Water.
- Noise.
Answer: Types.
Example 3 (You try): Suggest
Solutions.
Show the steps and answer
- Reduce.
- Treat.
- Report.
Answer: Actions.
Did you know?
More than eight million tonnes of plastic enter the oceans each year.
Why this matters
Clean air and water are basic needs for health and ecosystems.
4. Explore: Dust and litter survey
Count and classify litter in a marked 5 m square of schoolyard (with gloves and tongs) and place a sticky card outside to compare dust over a week.
- Mark the square.
- Count litter.
- Place the card.
- Compare.
Think about it: what did you notice?
What did you notice? Most litter was plastic; the card collected visible dust.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- ___ is harmful material added to the environment.
- A ___ causes pollution.
- ___ is smoky fog from air pollution.
- A ___ is a plastic piece under 5 mm.
Guided practice
Question 1. Name a pollution type.
Air.
Question 2. Source of air pollution?
Vehicles.
Question 3. Microplastic size?
Under 5 mm.
Independent practice
Level 1: Start
- Name a pollution type.
- Source of air pollution?
- Microplastic size?
- Effect on fish?
- Solution?
Level 2: Grow
- Why harmful?
- Why track source?
- Why law?
Level 3: Stretch
- Survey litter.
- Plot.
- Explain.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Explain how plastic pollution harms ecosystems.
Show a sample answer
Use a food chain.
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: Many sources.
Fix: Choices matter.
8. Lesson summary and revision card
- I can name pollution types.
- I can identify sources and effects.
- I can measure pollution safely.
- I can propose solutions.
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
- Pollution is harmful material or energy in the wrong place.
- Sources include vehicles, factories and waste.
- It harms health and ecosystems.
- Policy and personal action can reduce it.
11. Next lesson
Next lesson: Conservation. 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 pollution and pollutant. [2 marks]
- Describe three types of pollution. [3 marks]
- Explain one effect and one solution. [3 marks]
- Safety rule. [2 marks]
Total: 10 marks.
Marking guide and model answers
- 1 each
- Each [1]
- Effect [1]; solution [1]; link [1]
- 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
- Name a pollution type.
- Source of air pollution?
- Microplastic size?
- Effect on fish?
- Solution?
- Why harmful?
- Why track source?
- Why law?
- Survey litter.
- Plot.
Homework
Report one local pollution problem and a possible solution.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. Name a pollution type. | Air. | 1 |
| 2. Source of air pollution? | Vehicles. | 1 |
| 3. Microplastic size? | Under 5 mm. | 1 |
| 4. Effect on fish? | Harm. | 1 |
| 5. Solution? | Reduce waste. | 1 |
| 6. Why harmful? | Health. | 1 |
| 7. Why track source? | Stop it. | 1 |
| 8. Why law? | Rules. | 1 |
| 9. Survey litter. | Table. | 1 |
| 10. Plot. | Chart. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 Air.; 2 Vehicles.; 3 Under 5 mm.; 4 Harm.; 5 Reduce waste.. Level 2: 1 Health.; 2 Stop it.; 3 Rules.. Level 3: 1 Table.; 2 Chart.; 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 Name pollution types | 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 Identify sources and effects | 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 Measure pollution safely | 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 Propose solutions | 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: “Pollution only comes from factories.” Many sources.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Explain pollution.
- 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 studies pollution and what we can do about it. You do not need to be an expert to help.
- Pick up litter safely.
- Ask “Where does this go?”
- Wash hands.
- 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: name pollution types; identify sources and effects; measure pollution safely; propose solutions.
Prerequisite knowledge. Grade 5 ideas: weather, water cycle, ecosystems and human impact.
Materials. Gloves, tongs, sticky cards. 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. Choose a safe area.
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). Show a polluted river photo and ask, “Where did it come from?”
Explanation (10 min). Teach pollution.
Guided activity (10 min). Learners survey.
Independent activity (10 min). Learners propose.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. Where does it come from? What can we do?
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. “Pollution only comes from factories.” Many sources.
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. Explain pollution. 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 6 Unit 10, topic 8; Next Generation Science Standards, Earth and human activity; Cambridge Lower Secondary Science, Earth and environment; IB Primary Years Programme, sharing the planet. These sources informed the lesson.