Class: Primary Two
Term: Third Term
Subject: Pre-vocational Studies
Curriculum Theme: Home Economics
Previous Lesson: Harmful Substance That Could Be Taken Into The Body, Ways To Avoid Harmful Substance
Topic: Effects of Harmful Substances
Content/Learning Area: what are the Effects of Harmful Substances?, Damage to Organs, Addiction, Poor health, Behavioral Problems, Death
Time Allocation: 40 minutes
Performance Objectives
By the end of the lesson, pupils should be able to:
- Cognitive Domain:
List at least three effects of harmful substances on the body.
- Affective Domain:
Discuss with their peers the importance of avoiding harmful substances.
- Psychomotor Domain:
Express their feelings about the dangers of harmful substances.
- Social Domain:
Cooperate with peers during group discussions.
Reference Materials
- 9 – years Basic Education Curriculum
- Abuja Educational Resource Center Scheme of work
- NAPPS national Unified Scheme of Work
- Online Details
- Relevant Textbooks
Instructional Materials
To deliver this lesson, the teacher will use a whiteboard or chart paper, markers, and relevant pictures or illustrations.
Rationale for the Lesson
Understanding the effects of harmful substances is crucial for pupils’ health and well-being. This lesson provides a foundation for making informed choices and avoiding harmful substances throughout their lives. It also connects to future lessons on health and safety.
Prerequisite/Previous Knowledge
Pupils have prior knowledge of harmful substances from the previous lesson.
Lesson Content
What are the Effects of harmful substances?
Harmful substances cause many problems and negatively impact our health and well-being. The effects can be serious.
Damage to Organs
Harmful substances can severely damage vital organs, leading to serious health issues.
The following are examples of damage to organs caused by harmful substances:
- Harmful substances damage vital organs like the liver,kidneys,and heart,leading to serious health issues.
- Smoking damages the lungs,making breathing challenging.
- Excessive alcohol consumption can lead to liver cirrhosis.
- Some substances can cause brain damage, affecting cognitive functions.
Addiction
Addiction is a state where one feels a compulsive need to take a substance constantly, impacting various aspects of life.These include:
- Some substances create a need to take them constantly (addiction), impacting lives.
- Drug addiction can lead to neglecting responsibilities and relationships.
- Alcohol addiction can lead to job loss and financial instability.
- Nicotine addiction can lead to continuous smoking despite health warnings.
Poor Health
Harmful substances can lead to a decline in overall health,weakening the body’s natural defenses.
These include:
- Harmful substances cause sickness and weakness, weakening the immune system.
- Alcohol can damage the liver, leading to cirrhosis.
- Drug use can lead to malnutrition and vitamin deficiencies.
- Smoking can cause respiratory infections and chronic bronchitis.
Behavioral Problems
Harmful substances can alter behavior, leading to negative impacts on relationships and social interactions.
These include:
- These substances cause bad behavior and affect relationships, leading to aggression, irritability, and unpredictability.
- Drug use can lead to violence and crime.
- Alcohol abuse can result in domestic violence and strained family relationships.
- Substance abuse can lead to social isolation and alienation from peers.
Death
In severe cases, harmful substances can lead to fatal outcomes due to overdose or severe reactions.
These include:
- In severe cases, harmful substances can cause death, either from overdose or severe reactions.
- Drug overdose can lead to respiratory failure and cardiac arrest.
- alcohol poisoning can cause brain damage and death.
- Long-term substance abuse can lead to organ failure and premature death.
Teaching methods
To deliver this lesson, the teacher will adopt the following methods: Discussion, Question and Answer, Brainstorming, Visual Aids.
Instructional Procedures
To deliver this lesson, the teacher will adopt the following steps:
step 1: Introduction
Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: Review previous lesson, introduce the topic, and show engaging visuals.
Pupils’ Activity: Participate in review, listen attentively, and observe visuals.
Step 2: Description of Key Concepts
Time: 15 minutes
Teaching Skill: Explaining, Clarifying
Teacher’s Activity: Explain the effects of harmful substances using clear examples.
Pupils’ Activity: Listen attentively, ask questions, and take notes.
Step 3: Exhibition/Guided Practice
Time: 10 minutes
Teaching Skill: Modeling, Guiding
teacher’s Activity: Guide pupils through examples of each effect, using real-life scenarios.
Pupils’ Activity: Participate in discussions, provide examples, and answer questions.
Step 4: Self-Reliant Practice
Time: 5 minutes
Teaching Skill: Monitoring, Supporting
Teacher’s Activity: Observe pupils as they work independently on the evaluation questions.
Pupils’ Activity: Answer the evaluation questions individually.
Step 5: Note-Taking
Time: 2 minutes
Teaching Skill: Summarizing, Reinforcing
Teacher’s Activity: Summarize key points and encourage note-taking.
Pupils’ Activity: Take notes on key concepts and examples.
Step 6: Evaluation/Review
Time: 3 minutes
Teaching Skill: Assessing, Feedback
Teacher’s Activity: Review answers to evaluation questions and provide feedback.
Pupils’ Activity: Share their answers and listen to feedback.
Step 7: Conclusion
Time: 2 minutes
Teaching Skill: Summarizing, Concluding
Teacher’s Activity: Summarize the key points, emphasizing the importance of avoiding harmful substances for good health. Encourage pupils to share what they learned with their families and friends.Pupils’ Activity: Listen to the summary and ask any remaining questions.
Lesson Keywords
- Harmful Substances – Substances that can cause damage to the body.
- Addiction – A state of being compulsively drawn to something.
- Organs – Parts of the body that perform specific functions.
- behavior – The way a person acts or conducts themselves.
- Health – The state of being free from illness or injury.
Lesson Evaluation
to evaluate the learning, the teacher asks pupils to:
- Name three effects of harmful substances.
- How do harmful substances affect health?
- Why is it significant to avoid harmful substances?
- Give examples of harmful substances to avoid.
- How can we protect ourselves from harmful substances?
Assignment/Homework
- List five harmful substances commonly found in your community.
- Write a short paragraph on the importance of avoiding harmful substances.
- Interview a family member about the dangers of smoking and share your findings in the next class.
Differentiation
- For slower learners: Provide one-on-one assistance and simplified explanations.
- For advanced learners: Encourage further research and discussion on specific harmful substances.
- For visual/auditory/kinesthetic learners: Use visual aids, discussions, and hands-on activities to cater to different learning styles.
Note for Teachers
Ensure to use real-life examples and visual aids to make the lesson engaging and relatable for the pupils. Emphasize the importance of making healthy choices and avoiding harmful substances for a better future.

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