You will learn
- Say why we need water.
- Say that clean water is safe to drink.
- Name ways to make water safe with adult help.
- Keep water containers clean.
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
- We need water to live.
- Dirty water can make us ill.
- Adults can make water safe by boiling or filtering it.
- We keep drinking water and cups clean.
Words to know
water that is safe to drink
a tiny living thing that can make us ill
to heat water until it bubbles (an adult does this)
needing a drink
1. Discover: The well and the tap
At school, Efe fills her bottle at a clean tap. At her cousin’s house, the water is from a pond. It looks brown. “This water is not safe to drink,” says her aunt. She boils it and lets it cool in a clean pot. “Now it is safer.”
Think: Why did the aunt boil the water?
2. Understand: Clean water
Idea 1: Why water matters
Our bodies need water to live. We drink water when we are thirsty, when it is hot and after we play. Water helps the body work well.
Idea 2: Clean and dirty water
Clean water is safe to drink. Dirty water may have germs that cause tummy sickness. We do not drink from ponds, drains or puddles.
Idea 3: Making water safe
An adult can make water safe by boiling it, using a filter or adding a treatment. We store water in a clean, covered container. We wash cups before we drink.
3. Worked examples
Example 1 (I show you): Safe to drink?
A brown pond.
- Is it clear? No.
- May it have germs? Yes.
- Should we drink it? No.
Answer: Pond water is not safe to drink unless an adult treats it.
Example 2 (We do it together): Keep water clean
A water pot.
- Cover the pot.
- Use a clean cup with a handle.
- Wash hands before touching it.
Answer: A covered pot and clean cup keep water clean.
Example 3 (You try): When to drink
A hot day after play.
Show the steps and answer
- The body loses water.
- We feel thirsty.
- We drink clean water.
Answer: We drink clean water when we are thirsty or have played.
Did you know?
About two thirds of the human body is water.
Why this matters
Clean water protects us from sickness and keeps our bodies working.
4. Explore: Clean water test
Look at clear and cloudy water.
- An adult puts clear and cloudy water in cups.
- Look at both.
- Say which looks cleaner.
- Learn that clear water can still have germs, so adults treat water.
Think about it: what did you notice?
What did you notice? Cloudy water is not clean.
5. Practise
Say it in a sentence
Use these starters when you talk about the lesson. Say them out loud.
- We need ___ to live.
- Dirty water has ___.
- An adult ___ the water.
- We keep the pot ___.
Guided practice
Question 1. Why do we drink water?
To live and stay healthy.
Question 2. Is pond water safe?
No.
Question 3. What can dirty water give us?
Illness.
Independent practice
Level 1: Start
- Why do we drink water?
- Is pond water safe?
- What can dirty water give us?
- Who boils water?
- How do we keep a pot clean?
Level 2: Grow
- Why do we wash cups?
- When do we feel thirsty?
- Name one way to make water safe.
Level 3: Stretch
- Explain why we cover drinking water.
- What would you tell a friend who wants to drink from a puddle?
- Plan a clean water routine for school.
Answers are in the answer key below. Try first, then check.
6. Apply: Science in everyday life
Where does your family get drinking water?
Show a sample answer
A tap, a well or a borehole.
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: Clear water may still have germs.
Fix: Puddle water is not safe.
8. Lesson summary and revision card
- I can say why we need water.
- I can say that clean water is safe to drink.
- I can name ways to make water safe with adult help.
- I can keep water containers clean.
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
- We need water to live.
- Dirty water can make us ill.
- Adults can make water safe by boiling or filtering it.
- We keep drinking water and cups clean.
11. Next lesson
Next lesson: Personal hygiene. 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.
- Why do we need water? [2 marks]
- Why is dirty water unsafe? [2 marks]
- Name two ways to make water safe. [2 marks]
- How do we keep drinking water clean? [3 marks]
- What do you do if the water looks brown? [2 marks]
Total: 11 marks.
Marking guide and model answers
- To live [1]; to stay healthy [1]
- Germs [1]; can make us ill [1]
- Any two [1 each]
- Cover it [1]; clean cup [1]; clean hands [1]
- Do not drink it [1]; tell an adult [1]
Score guide: 10 to 11 = secure. 7 to 9 = nearly there, revise the parts you missed. Under 7 = work through the lesson again with a grown-up.
Printable worksheet
- Why do we drink water?
- Is pond water safe?
- What can dirty water give us?
- Who boils water?
- How do we keep a pot clean?
- Why do we wash cups?
- When do we feel thirsty?
- Name one way to make water safe.
- Explain why we cover drinking water.
- What would you tell a friend who wants to drink from a puddle?
Homework
Make a poster about clean water. Show three ways to keep water safe.
Answer key and marking scheme
| Question | Expected response | Marks |
|---|---|---|
| 1. Why do we drink water? | To live and stay healthy. | 1 |
| 2. Is pond water safe? | No. | 1 |
| 3. What can dirty water give us? | Illness. | 1 |
| 4. Who boils water? | An adult. | 1 |
| 5. How do we keep a pot clean? | Cover it. | 1 |
| 6. Why do we wash cups? | To keep germs away. | 1 |
| 7. When do we feel thirsty? | When it is hot or after play. | 1 |
| 8. Name one way to make water safe. | Boil or filter it. | 1 |
| 9. Explain why we cover drinking water. | To keep germs and dirt out. | 1 |
| 10. What would you tell a friend who wants to drink from a puddle? | Do not. It is not clean. | 1 |
| Total | 10 |
Independent practice answers. Level 1: 1 To live and stay healthy.; 2 No.; 3 Illness.; 4 An adult.; 5 Cover it.. Level 2: 1 To keep germs away.; 2 When it is hot or after play.; 3 Boil or filter it.. Level 3: 1 To keep germs and dirt out.; 2 Do not. It is not clean.; 3 Clean tap, clean bottle, clean hands..
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 Say why we need water | 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 Say that clean water is safe to drink | 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 Name ways to make water safe with adult help | 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 Keep water containers clean | 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: “All clear water is safe.” Clear water may still have germs.
- Explain another way: use real objects, pictures or actions first, then words.
- Show a simpler example: Use two cups. Say which water is safe and why.
- 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 learns why clean water matters and how to keep it safe. You do not need to be an expert to help.
- Show how your family stores drinking water.
- Ask, “Why do we cover the pot?”
- Remind your child never to drink from puddles.
- 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: say why we need water; say that clean water is safe to drink; name ways to make water safe with adult help; keep water containers clean.
Prerequisite knowledge. None. Learners should be able to look, listen and talk about what they notice.
Materials. Clear and cloudy water, clear cups, chart paper, crayons. 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. Prepare two cups of water (one clean, one cloudy with soil). Do not let learners drink any of it.
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 clear and cloudy water and ask, “Which would you drink?”
Explanation (10 min). Teach clean water and germs.
Guided activity (10 min). Learners compare the two cups.
Independent activity (10 min). Learners make clean water posters.
Assessment and reflection (5 min). Ask each learner to say one thing they learned and how they know it.
Key questions. Is it clean? Who made it safe?
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. “All clear water is safe.” Clear water may still have germs.
13–15. Assessment questions, answer keys, marking scheme
Use the quiz, the 11-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. Use two cups. Say which water is safe and why. 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 1 Unit 5, topic 5; Next Generation Science Standards, from molecules to organisms (human body and senses); Cambridge Primary Science Stage 1, humans and animals; IB Primary Years Programme, who we are. These sources informed the lesson.