Class: Senior Secondary School 1 (SS1, SS 1, SSS1, SSS 1)
Term: 2nd Term
Week: 7
Age: 15 years
Duration: 45 minutes
Subject: Physical Education
Curriculum Theme: Physical Education
Previous Lesson: Blood Circulatory System.
Topic: The Circulatory System
Subject Matter: heart muscle, parts of the heart, difference between veins and arteries, effects of training on the heart

Specific Objectives

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

Cognitive Domain:

Define the term ‘circulatory system’.
Identify and state the functions of the main parts of the heart.
Differentiate between veins and arteries based on their structure and function.
Explain the effects of regular physical training on the heart.

Affective Domain:

Appreciate the importance of a healthy circulatory system for overall well-being.
Participate actively in discussions about heart health and exercise.

Psychomotor Domain:

Draw and label a simple diagram of the human heart.
Demonstrate understanding of blood flow through the heart.

Collaborate with peers during group activities and discussions.

Reference Materials

The following resources were used in planning this lesson:

9 Years Basic Education Curriculum for Physical and Health Education.
Lagos State Unified Scheme of Work for Senior Secondary Schools.
Physical Education for Senior Secondary Schools Book 1.
https://www.example.com/circulatory-system

Instructional Materials

The teacher will teach this lesson with the aid of:

Diagrams of the human heart and circulatory system.
Textbooks on Physical Education.
CD-ROMs or digital resources showing heart functions.
Projector for displaying images and videos.
Pictures illustrating the heart and blood vessels.

Rationale for the Lesson

This lesson helps pupils understand how their blood circulates in the body and the role of the heart. Knowing the parts of the heart and how exercise affects it can encourage pupils to adopt healthy lifestyle choices for a strong heart and overall good health.

Prerequisite/Previous Knowledge

Pupils have basic knowledge of the human body and some of its organs from previous lessons in Basic Science.

Lesson Content/Board Summary

The Circulatory System

The Heart Muscle

The heart is a muscular organ located slightly to the left of the center of the chest. It is about the size of a clenched fist. The heart’s primary function is to pump blood throughout the body, supplying oxygen and nutrients to tissues and removing carbon dioxide and other waste products.

Parts of the Heart

The human heart has four chambers and several important vessels and valves:

Atria (Right and Left): The two upper chambers that receive blood.
Ventricles (Right and Left): The two lower chambers that pump blood out of the heart.
Septum: A muscular wall that divides the right and left sides of the heart.
Valves: Flaps of tissue that prevent the backflow of blood (e.g., tricuspid, mitral, pulmonary, aortic valves).
Aorta: The largest artery, carrying oxygenated blood from the left ventricle to the body.
Pulmonary Artery: Carries deoxygenated blood from the right ventricle to the lungs.
Pulmonary Veins: Carry oxygenated blood from the lungs to the left atrium.
Vena Cava (Superior and Inferior): Large veins that carry deoxygenated blood from the body to the right atrium.

Difference Between Veins and Arteries

Veins and arteries are the two main types of blood vessels in the circulatory system, each with distinct structures and functions.

The following are key differences between veins and arteries:

Function: Arteries carry oxygenated blood away from the heart to the body (except pulmonary artery). Veins carry deoxygenated blood from the body back to the heart (except pulmonary vein).
Wall Thickness: Arteries have thick, muscular, and elastic walls to withstand high blood pressure. Veins have thinner, less muscular, and less elastic walls.
Blood Pressure: Blood flows through arteries under high pressure. Blood flows through veins under low pressure.
Valves: Arteries generally do not have valves (except at the heart exit). Veins contain valves to prevent the backflow of blood, especially in the limbs.
Location: Arteries are typically found deeper within the body. Veins are often closer to the surface of the skin.

Effects of Training on the Heart

Regular physical training has several positive effects on the heart, making it more efficient and resilient.

The following are effects of training on the heart:

Increased Heart Size and Strength (Cardiac Hypertrophy): The heart muscle becomes stronger and able to pump more blood with each beat.
Lower Resting Heart Rate: A fitter heart can pump the same amount of blood with fewer beats per minute.
Increased Stroke Volume: More blood is pumped out of the heart per beat, both at rest and during exercise.
Improved Oxygen Delivery: The heart becomes more efficient at delivering oxygen to working muscles.
Faster Recovery Rate: The heart rate returns to normal more quickly after physical exertion.
Reduced Risk of Cardiovascular Diseases: Regular exercise helps lower blood pressure, reduce bad cholesterol, and improve overall heart health.

Teaching Methods/Instructional Techniques

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

Instructional Procedures

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction/Questioning
Teacher’s Activity: The teacher greets the pupils and asks them what they know about the human body and its organs. The teacher then introduces the topic: “The Circulatory System,” emphasizing the heart as its central organ.
Pupils’ Activity: Pupils respond to the questions and listen attentively to the introduction.
Learning Point: Pupils are prepared for the new lesson and connect it to prior knowledge.

Step 2: Presentation of The Heart Muscle

Time: 7 minutes
Teaching Skill: Explanation/Demonstration
Teacher’s Activity: The teacher explains what the heart muscle is and its main function using diagrams. The teacher also shows the location of the heart in the body.
Pupils’ Activity: Pupils listen, observe the diagrams, and ask questions for clarification.
Learning Point: Pupils understand the basic structure and function of the heart muscle.

Step 3: Presentation of Parts of the Heart

Time: 10 minutes
Teaching Skill: Illustration/Guided Practice
Teacher’s Activity: The teacher uses a large diagram or projector to show the different parts of the heart. The teacher names and explains the function of each part (chambers, valves, major vessels) and guides pupils to draw and label a simple diagram of the heart in their notebooks.
Pupils’ Activity: Pupils observe the diagram, listen to explanations, and practice drawing and labeling the heart in their exercise books.
Learning Point: Pupils can identify and name the main parts of the heart and understand their roles.

Step 4: Presentation of Difference Between Veins and Arteries

Time: 8 minutes
Teaching Skill: Comparison/Discussion
Teacher’s Activity: The teacher explains the difference between veins and arteries, highlighting their structure, function, and the type of blood they carry. The teacher uses diagrams to illustrate these differences.
Pupils’ Activity: Pupils listen, observe the diagrams, and participate in a discussion comparing veins and arteries.
Learning Point: Pupils can differentiate between veins and arteries.

Step 5: Presentation of Effects of Training on the Heart

Time: 8 minutes
Teaching Skill: Explanation/Brainstorming
Teacher’s Activity: The teacher discusses the positive effects of regular physical training on the heart. The teacher encourages pupils to share their own experiences or knowledge about how exercise benefits the heart.
Pupils’ Activity: Pupils listen, contribute ideas, and ask questions about the benefits of exercise on heart health.
Learning Point: Pupils understand how physical activity improves heart function and health.

Step 6: Evaluation/Review

Time: 5 minutes

Teaching Skill: Questioning/Assessment

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

Define the circulatory system.
Mention any three parts of the human heart and state their functions.
State two differences between veins and arteries.
List three positive effects of training on the heart.

Pupils’ Activity: Pupils answer orally and in writing.

Learning Point: Pupils demonstrate understanding of the lesson.

Step 7: Conclusion

Time: 2 minutes
Teaching Skill: Summarization/Assignment
Teacher’s Activity: The teacher summarizes the key points of the lesson, reiterating the importance of the circulatory system and regular exercise. The teacher gives homework: “Draw a detailed diagram of the human heart and label its four chambers and major blood vessels.”
Pupils’ Activity: Pupils listen to the summary and copy the homework.
Learning Point: Pupils consolidate their learning and have a task for reinforcement.

Lesson Keywords

Circulatory System – The body system that circulates blood, nutrients, oxygen, carbon dioxide, and hormones around the body.
Heart – A muscular organ that pumps blood through the circulatory system.
Artery – A blood vessel that carries oxygenated blood away from the heart.
Vein – A blood vessel that carries deoxygenated blood towards the heart.
Atrium – An upper chamber of the heart that receives blood.
Ventricle – A lower chamber of the heart that pumps blood out.
Cardiac Hypertrophy – The enlargement and strengthening of the heart muscle due to exercise.

Differentiation

For pupils who grasp concepts quickly, the teacher can provide additional research questions on common circulatory diseases or the different types of blood cells. For pupils needing more support, the teacher can provide simplified diagrams, offer one-on-one assistance during drawing activities, or pair them with stronger pupils for collaborative learning.

Note for teachers using this lesson plan

Ensure that the diagrams used are clear and easy for pupils to understand. Encourage active participation and questions throughout the lesson. Emphasize the practical implications of understanding the circulatory system, especially regarding healthy lifestyle choices and physical activity.