Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: 3rd Term
Week: 1
Age: 15 years
Duration: 45 minutes
Subject: Health Education
Curriculum Theme: Health Education
Previous Lesson: .
Topic: COMMUNICABLE DISEASE
Subject Matter: definition of communicable disease, epidemiology, prevalence rate, classification of communicable diseases including airborne water borne and body contact infections

Specific Objectives

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

Cognitive Domain:

Define communicable disease.
Explain the term ‘epidemiology’.
State what prevalence rate means.
List the classifications of communicable diseases.

Affective Domain:

Appreciate the importance of understanding disease patterns.
Show concern for preventing the spread of communicable diseases.

Psychomotor Domain:

Identify different modes of communicable disease transmission.
Classify various communicable diseases based on their transmission routes.

Discuss with peers the prevalence patterns of diseases in their community.
Relate the causes of communicable diseases to everyday life.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Health Education (Senior Secondary).
State Unified Scheme of Work for Health Education SSS 1.
Health Education for Senior Secondary Schools, Book 1.
Online resources on public health and epidemiology.

Instructional Materials

The teacher will teach this lesson with the aid of:

Posters showing various communicable diseases and their modes of transmission.
Charts illustrating disease prevalence rates.
Graphic presentations of disease prevalence patterns.
Whiteboard and markers.

Rationale for the Lesson

This lesson helps pupils understand how diseases spread and affect communities. Understanding communicable diseases enables pupils to take preventive measures and contribute to better public health in their environment and Nigeria.

Prerequisite/Previous Knowledge

Pupils have basic knowledge of health and common illnesses from their Junior Secondary School Health Education lessons.

Lesson Content/Board Summary

COMMUNICABLE DISEASE

Definition of Communicable Disease

A communicable disease is an illness that can be transmitted from one person or animal to another, or from an infected surface to a person.

These diseases are caused by infectious agents such as bacteria, viruses, fungi, or parasites.

Epidemiology

Epidemiology is the study of how diseases spread through populations, including their patterns, causes, and effects on groups of people.

It helps public health officials understand disease outbreaks and develop strategies for prevention and control.

Prevalence Rate

Prevalence rate refers to the total number of existing cases of a disease in a specific population at a given time or over a period.

It is expressed as a percentage or as the number of cases per 100,000 people.

It helps to measure the burden of a disease in a community.

Classification of Communicable Diseases

Communicable diseases can be classified based on their mode of transmission. The main types include:

Airborne Infections: These are diseases spread through tiny droplets or particles in the air when an infected person coughs, sneezes, or talks.
- Examples: Tuberculosis, Measles, Influenza, Common Cold.
Waterborne Infections: These diseases are transmitted through contaminated water, often due to faecal matter containing disease-causing microorganisms.
- Examples: Cholera, Typhoid Fever, Dysentery, Giardiasis.
Body Contact Infections: These are diseases spread through direct physical contact with an infected person or animal, or indirect contact with contaminated objects.
- Examples: Ringworm, Scabies, Sexually Transmitted Infections (STIs) like Gonorrhoea, Syphilis, HIV/AIDS.

Teaching Methods/Instructional Techniques

Discussion, Lecture, Demonstration, Question and Answer, Visual Aids

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: The teacher greets the pupils and reviews the previous lesson briefly. The teacher then asks pupils to mention some common illnesses they know and how they think these illnesses spread. This leads to the topic of communicable diseases.
Pupils’ Activity: Pupils respond to questions and share their ideas on how illnesses spread.
Learning Point: Pupils are introduced to the topic of communicable diseases and connect it to their prior knowledge.

Step 2: Definition of Communicable Disease

Time: 8 minutes
Teaching Skill: Explanation/Clarification
Teacher’s Activity: The teacher clearly defines communicable disease, explaining that these are illnesses that can be transferred from one host to another. The teacher provides simple examples and writes the definition on the board.
Pupils’ Activity: Pupils listen attentively, take notes, and ask questions for clarification.
Learning Point: Pupils understand the meaning of a communicable disease.

Step 3: Epidemiology

Time: 8 minutes
Teaching Skill: Explanation/Illustration
Teacher’s Activity: The teacher explains the concept of epidemiology as the study of disease patterns and causes in populations. The teacher uses real-life examples of how epidemiologists investigate disease outbreaks.
Pupils’ Activity: Pupils listen, observe charts/posters if available, and participate in a brief discussion about disease patterns.
Learning Point: Pupils grasp the meaning and importance of epidemiology.

Step 4: Prevalence Rate

Time: 7 minutes
Teaching Skill: Explanation/Calculation
Teacher’s Activity: The teacher defines prevalence rate, explaining it as the total number of existing cases in a population at a given time. The teacher uses a simple hypothetical example to illustrate how it is measured (e.g., number of flu cases in the school this week).
Pupils’ Activity: Pupils listen, take notes, and try to understand the concept with the help of the teacher’s example.
Learning Point: Pupils understand what prevalence rate is and how it indicates the burden of a disease.

Step 5: Classification of Communicable Diseases

Time: 7 minutes
Teaching Skill: Categorisation/Examples
Teacher’s Activity: The teacher introduces the classification of communicable diseases based on their mode of transmission: airborne, waterborne, and body contact infections. The teacher explains each category and writes them on the board.
Pupils’ Activity: Pupils listen and note down the different classifications.
Learning Point: Pupils learn the main ways communicable diseases are transmitted.

Step 6: Examples of Classified Diseases

Time: 5 minutes
Teaching Skill: Elaboration/Discussion
Teacher’s Activity: For each classification (airborne, waterborne, body contact), the teacher asks pupils to mention specific diseases and provides additional examples. The teacher uses posters or charts to illustrate.
Pupils’ Activity: Pupils mention types of communicable diseases and discuss prevalence patterns, identifying examples for each category.
Learning Point: Pupils can identify and classify specific communicable diseases based on their transmission routes.

Step 7: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

Define communicable disease.
Explain the term ‘epidemiology’.
What is prevalence rate?
List three classifications of communicable diseases based on their mode of transmission.
Mention two examples of airborne infections.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 5 minutes
Teaching Skill: Recap/Summarization
Teacher’s Activity: The teacher summarizes the key points of the lesson, emphasizing the importance of understanding communicable diseases for personal and public health. The teacher assigns homework: Ask family members about common diseases in their community and how they spread.
Pupils’ Activity: Pupils listen to the summary and copy down the homework.
Learning Point: Pupils consolidate their understanding of the lesson and are encouraged to apply the knowledge.

Lesson Keywords

Communicable Disease – An illness that can be transmitted from one person or animal to another.
Epidemiology – The study of how diseases spread through populations.
Prevalence Rate – The total number of existing cases of a disease in a specific population at a given time.
Airborne Infections – Diseases spread through droplets or particles in the air.
Waterborne Infections – Diseases transmitted through contaminated water.
Body Contact Infections – Diseases spread through direct or indirect physical contact.

Differentiation

The teacher will provide additional support to struggling pupils by offering simplified explanations and more examples. Advanced pupils will be encouraged to research specific disease outbreaks and present their findings to the class.

Note for teachers using this lesson plan

Ensure to use local examples of communicable diseases relevant to the pupils’ community to make the lesson more relatable. Encourage active participation and questions throughout the lesson to check for understanding.