Keeping Water Clean: How to Purify Water Physical and Health Education Primary 2 Third Term Lesson Notes Week 2

Subject: Physical and Health Education

Class: Primary 2

Term: Third Term

Week: 2

Topic: Hygiene

Sub-topic: Demonstrating and explaining how to purify water at home.

Duration: 40 minutes

Behavioural Objectives: By the end of the lesson, pupils should be able to:

1. Show how to purify water using different methods.
2. Explain how they purify water at home.

Key Words: Purify, Boil, Filter, Germs, Solar disinfection.

Entry Behaviour: Pupils should know why clean water is important.

Learning Resources and Materials: Clear plastic bottles, clean cloth, water tablets, water, pot, stove, cups.

Building Background / Connection to Prior Knowledge: Discuss the importance of clean water and how dirty water can make us sick.

Embedded Core Skills: Critical thinking, problem-solving.

Learning Materials:

• Clear plastic bottles
• Clean cloth or filter
• Water tablets
• Pot and stove

Reference Books: Lagos State Scheme of Work

Instructional Materials: Clear plastic bottles, clean cloth or filter, water tablets, pot, stove.

Content:

1. How to purify water using different methods.
2. How to purify water at home using boiling, filtering, water tablets, and solar disinfection.

Hello, class! Let’s learn how to purify water and keep it clean for drinking. 😊

1. Demonstrate the process of purifying water:
   • Boiling:
     • Put water in a pot and heat it on a stove until it boils (bubbles).
     • Let it boil for about 3 minutes to kill germs.
   • Filtering:
     • Use a clean cloth or filter to pour water through.
     • The filter takes out dirt and other things from the water.
   • Water Tablets:
     • Put a water tablet in a cup of water.
     • Wait for a few minutes and the tablet will clean the water.
   • Solar Disinfection:
     • Fill a clear plastic bottle with water.
     • Place the bottle in the sun for about 6 hours.
     • The sun helps kill germs in the water.
2. Explain how they purify water at home:
   • Boiling: At home, you can heat water on a stove until it boils. Let it cool down before drinking.
   • Filtering: Use a clean cloth or filter to pour water through to clean it.
   • Using Water Tablets: Follow instructions on the packet to use the tablet in water and wait for it to clean.
   • Solar Disinfection: Fill a clear bottle with water and leave it in the sun for many hours to clean the water.

Remember to always drink clean water! 😊

Here are some questions and answers to help you understand how to purify water! 😊

1. What is purifying water?
   • Making water clean and safe to drink.
2. Why do we purify water?
   • To remove germs and dirt.
3. How do we boil water?
   • Heat water in a pot until it boils (bubbles).
4. What is filtering water?
   • Pouring water through a clean cloth or filter to remove dirt.
5. How do water tablets work?
   • Add a water tablet to water. It helps clean the water.
6. What is solar disinfection?
   • Putting water in a clear plastic bottle in the sun to clean it.
7. How long should you boil water?
   • For about 3 to 5 minutes.
8. How do you filter water?
   • Pour water through a clean cloth or filter.
9. How do you use a water tablet?
   • Add it to water and wait for it to clean.
10. What kind of bottle is needed for solar disinfection?
    • A clear plastic bottle.
11. How long does water need to be in the sun for solar disinfection?
    • For about 6 hours.
12. What does boiling water do?
    • It kills germs in the water.
13. Why is clean water important?
    • It keeps us healthy.
14. What happens if we drink dirty water?
    • We can get sick.
15. Can you name one way to purify water?
    • Boiling, filtering, using water tablets, or solar disinfection.

Evaluation :

1. We purify water by ______ it. a) coloring b) boiling c) freezing d) breaking
2. Boiling water kills ______. a) toys b) plants c) germs d) stones
3. To filter water, use a ______ cloth. a) wet b) new c) clean d) old
4. Water tablets help clean water by killing ______. a) trees b) germs c) grass d) fish
5. When you put water in the sun, it uses ______ disinfection. a) moon b) wind c) solar d) rain
6. How long should water be boiled? a) 1 minute b) 2 minutes c) 3 minutes d) 5 minutes
7. How long should a bottle of water be in the sun for solar disinfection? a) 6 hours b) 2 hours c) 10 hours d) 1 hour
8. Using a water tablet makes water ______. a) tasty b) purple c) safe d) hot
9. Which method uses a clear plastic bottle? a) boiling b) filtering c) water tablets d) solar disinfection
10. What can we use to filter water? a) a cloth b) a toy c) a book d) a plate
11. Which method uses heat? a) freezing b) boiling c) filtering d) solar disinfection
12. What does filtering remove from water? a) air b) dirt c) music d) leaves
13. Drinking clean water keeps us ______. a) happy b) healthy c) asleep d) upset
14. Which method uses a special tablet? a) solar disinfection b) filtering c) water tablets d) boiling
15. Why do we purify water? a) to keep it cold b) to make it bubbly c) to make it colorful d) to make it safe to drink

Presentation:

Step 1: The teacher revises the previous topic, which was about the importance of clean water for good health. Health and Hygiene Water Purification Physical and Health Education Primary 2 Third Term Lesson Notes Week 1

Step 2: The teacher introduces the new topic on how to purify water. Demonstrate boiling water in a pot, filtering water through a clean cloth, and using water tablets to clean water.

Step 3: The teacher invites pupils to share how they purify water at home. The teacher corrects any mistakes and explains further if needed.

Teacher’s Activities:

• Demonstrate how to boil water to purify it.
• Show how to filter water using a clean cloth.
• Explain how water tablets can clean water.
• Teach how to use solar disinfection.

Learners’ Activities:

• Watch the teacher’s demonstrations.
• Share how they purify water at home.
• Ask questions about purifying water.

Assessment:

• Ask pupils to demonstrate one way to purify water.
• Ask pupils why clean water is important for good health.

Evaluation Questions:

1. What does it mean to purify water?
2. Name one way to purify water.
3. How does boiling water clean it?
4. How do water tablets work?
5. How long should you boil water?
6. What is filtering water?
7. What do you use to filter water?
8. How long does water need to be in the sun for solar disinfection?
9. Why is clean water important?
10. What happens if we drink dirty water?

Conclusion: The teacher goes around the class to mark pupils’ work and provide feedback. Encourage pupils to practice purifying water at home. Remind them to share what they learned with their families.