Class: Senior Secondary School 2 (SS2 / SSS 2)
Term: First Term
Week: 7
Age: 16 years
Duration: 45 minutes
Subject: Physical Education
Curriculum Theme: Human Body Systems
Previous Lesson: Triple Jump: Meaning, Skills, Equipment and Rules.
Topic: Muscles
Subject Matter: Meaning of muscles, major muscles of the body, muscles involved in movements.

Specific Objectives

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

Cognitive Domain:

Define muscles.
Identify major muscles of the human body.
Explain how muscles are involved in various body movements.

Affective Domain:

Appreciate the importance of muscles for daily activities and sports.
Participate actively in discussions about muscle functions.

Psychomotor Domain:

Locate and point to major muscles on diagrams or models.
Demonstrate simple movements to show muscle action.

Collaborate with peers during identification of muscles.

Reference Materials

The following resources were used in planning this lesson:

Senior Secondary Schools Education Curriculum
State Unified Scheme of Work
Physical Education for Senior Secondary Schools, Textbook 2.

Instructional Materials

The teacher will teach this lesson with the aid of:

Textbooks
Diagrams of the human muscular system
Models of the human body or specific muscle groups
CD-ROMs (if available)
Projectors (if available)

Rationale for the Lesson

Understanding muscles helps pupils know how their bodies move and function. This knowledge is important for maintaining good physical health, preventing injuries, and improving performance in sports and daily activities.

Prerequisite/Previous Knowledge

Pupils have basic knowledge of the human body and its parts from previous lessons.

Lesson Content/Board Summary

Muscles

Meaning of Muscles

Muscles are soft tissues found in the body that can contract (shorten) and relax (lengthen). This ability to contract and relax is what produces movement in the body.

Major Muscles of the Body

The human body has many muscles, which can be grouped into three main types: skeletal, smooth, and cardiac. Skeletal muscles are the ones responsible for body movement and are attached to bones. Some major skeletal muscles include:

Biceps: Located on the front of the upper arm, responsible for bending the elbow.
Triceps: Located on the back of the upper arm, responsible for straightening the elbow.
Quadriceps: A group of four muscles on the front of the thigh, responsible for straightening the knee and flexing the hip.
Hamstrings: A group of three muscles on the back of the thigh, responsible for bending the knee and extending the hip.
Deltoids: Located on the shoulder, responsible for lifting the arm sideways.
Pectorals (Pec major): Large muscles of the chest, responsible for moving the arm across the body.
Gluteals (Gluteus maximus): Large muscles of the buttocks, responsible for extending and rotating the hip.
Abdominals (Abs): Muscles on the front of the abdomen, responsible for bending the torso and protecting internal organs.
Calves (Gastrocnemius): Muscles on the back of the lower leg, responsible for pointing the foot downwards (plantarflexion).

Muscles Involved in Movements

Muscles work in pairs (antagonistic pairs) to produce movement. When one muscle contracts, its opposing muscle relaxes. This allows for controlled movement around joints.

Examples of muscles and their roles in movement:

Bending the arm (flexion): The biceps muscle contracts, while the triceps muscle relaxes.
Straightening the arm (extension): The triceps muscle contracts, while the biceps muscle relaxes.
Lifting the leg forward: The quadriceps muscles contract.
Bending the leg backward: The hamstring muscles contract.
Running/Walking: Involves the coordinated action of quadriceps, hamstrings, gluteals, and calf muscles.
Lifting objects: Requires the coordinated effort of arm, shoulder, and back muscles (e.g., biceps, deltoids, pectorals).

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, reviews the previous lesson briefly, and introduces the new topic, “Muscles,” by asking pupils what they think muscles are used for.
Pupils’ Activity: Pupils respond to the teacher’s questions and listen attentively.
Learning Point: Pupils are prepared for the lesson and connect it to prior knowledge.

Step 2: Meaning of Muscles

Time: 7 minutes
Teaching Skill: Explanation/Definition
Teacher’s Activity: The teacher defines muscles as body tissues that contract to produce movement, using simple examples like lifting an arm.
Pupils’ Activity: Pupils listen to the definition and note down key points.
Learning Point: Pupils understand the basic meaning of muscles.

Step 3: Major Muscles of the Body (Part 1)

Time: 7 minutes
Teaching Skill: Identification/Demonstration
Teacher’s Activity: The teacher uses diagrams and models to identify and point out major muscles in the upper body, such as biceps, triceps, deltoids, and pectorals, explaining their locations.
Pupils’ Activity: Pupils observe the diagrams and models, identifying the muscles as the teacher points them out.
Learning Point: Pupils can identify major upper body muscles.

Step 4: Major Muscles of the Body (Part 2)

Time: 7 minutes
Teaching Skill: Identification/Demonstration
Teacher’s Activity: The teacher continues to use diagrams and models to identify major muscles in the lower body and trunk, such as quadriceps, hamstrings, gluteals, abdominals, and calves, explaining their locations.
Pupils’ Activity: Pupils continue to observe and identify the muscles on the diagrams and models.
Learning Point: Pupils can identify major lower body and trunk muscles.

Step 5: Muscles Involved in Movements

Time: 7 minutes
Teaching Skill: Explanation/Illustration
Teacher’s Activity: The teacher explains how muscles work in pairs (antagonistically) to produce movements like bending, lifting, and running, giving examples of specific muscles involved.
Pupils’ Activity: Pupils listen and may try to perform simple movements to feel the muscle actions.
Learning Point: Pupils understand the role of muscles in various body movements.

Step 6: Class Discussion/Application

Time: 5 minutes
Teaching Skill: Questioning/Discussion
Teacher’s Activity: The teacher facilitates a discussion, asking pupils to name a movement and identify the muscles they think are primarily involved.
Pupils’ Activity: Pupils participate in the discussion, attempting to identify muscles for given movements.
Learning Point: Pupils apply their knowledge of muscles to real-life movements.

Step 7: Evaluation/Review

Time: 5 minutes
Teaching Skill: Questioning/Assessment
Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

What are muscles?
Name three major muscles found in the upper body.
Mention two major muscles found in the lower body.
Explain how muscles work together to bend your arm.

Pupils’ Activity: Pupils answer orally and in writing.
Learning Point: Pupils demonstrate understanding of the lesson.

Step 8: Conclusion

Time: 2 minutes
Teaching Skill: Summarization
Teacher’s Activity: The teacher summarizes the key points of the lesson and gives pupils an assignment to draw and label five major muscles of the body.
Pupils’ Activity: Pupils listen to the summary and copy the assignment.
Learning Point: The lesson is reinforced, and pupils have follow-up work.

Lesson Keywords

Muscles – Tissues that contract to produce movement.
Contraction – The shortening of a muscle.
Movement – The act of changing position.
Biceps – Muscle on the front of the upper arm.
Triceps – Muscle on the back of the upper arm.
Quadriceps – Group of muscles on the front of the thigh.
Hamstrings – Group of muscles on the back of the thigh.

Differentiation

For pupils who grasp concepts quickly, the teacher can ask them to research additional muscle groups or specific muscle functions in sports. For pupils needing more support, the teacher will provide labeled diagrams and guide them individually in identifying muscles.

Note for teachers using this lesson plan

Encourage pupils to feel their own muscles contracting and relaxing during simple movements to enhance understanding. Use clear, large diagrams or an anatomical chart if models are not available. Emphasize the connection between muscle health and overall well-being.