Health-Related Activities - Flexibility and Body Composition

Grade 9 · Physical Education

Semester 1 | Period 1 | Week 5

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Subject: Physical Education

Semester: 1

Period: 1

Week: 5


School Name: __________________________
Teacher’s Name: ________________________
Subject: Physical Education
Grade Level: Grade 9
Date: __________________________
Lesson Duration: 45 minutes
Week & Period: Week 5, Period 1
Topic: Health-Related Activities – Flexibility and Body Composition
Sub-topic: Flexibility and Body Composition Exercises

Learning Objectives
By the end of the lesson, students should be able to:

  1. Demonstrate flexibility exercises such as stretching and yoga.
  2. Explain the importance of flexibility for joint mobility, injury prevention, and performance.
  3. Understand body composition, perform basic assessments such as BMI estimation, and discuss its role in health and fitness.

Previous Knowledge
Students already know:
• Basic fitness components
• Awareness of stretching exercises and physical activity

Instructional Materials
• Textbook: Physical education textbooks for Grade 9
• Teaching aids: Mats, measuring tape, BMI charts, sit-and-reach box
• Students' notebooks and writing materials

Lesson Development – ABC Model

A – Anticipation (Warm-up / Starter)
Time: 5–10 minutes
Activity: The teacher will ask the class:
• What exercises or stretches do you perform to stay flexible?
• Why do you think body composition is important for health and performance?
The teacher will record responses on the board.

Teacher’s Role: Guide discussion, clarify misconceptions about flexibility and body composition.
Learner’s Role:
• Share personal experiences with stretching or yoga.
• Participate verbally and actively in discussion.

B – Building Knowledge (Main Lesson Body)

Time: 25–30 minutes

Teacher’s Role (Expanded):

Explanation of Flexibility: The teacher begins by defining flexibility as the range of motion at a joint or series of joints. Emphasis is placed on how good flexibility contributes to joint mobility, reduces the risk of injury, improves posture, enhances balance and coordination, and supports performance in both sports and daily activities. Examples of flexibility-dependent activities are illustrated using local Liberian traditional dances, gymnastics movements, or football stretches.

Demonstration of Flexibility Exercises: The teacher demonstrates a variety of flexibility exercises, including static stretches (holding a stretch for 15–30 seconds), dynamic stretches (controlled movements through a range of motion), and beginner-friendly yoga poses such as forward bends, side stretches, and trunk rotations. Emphasis is placed on proper technique, breathing, and avoiding overstretching. Students are guided to understand which muscles are stretched during each exercise and how this improves overall mobility.

Introduction of Body Composition: The teacher defines body composition as the proportion of fat mass to lean mass (muscles, bones, and water) in the body. The teacher explains the relevance to health and physical performance, noting that maintaining a healthy body composition supports endurance, strength, and injury prevention.

Assessment of Flexibility and Body Composition: Practical demonstrations are given for measuring flexibility and body composition. For flexibility, the sit-and-reach test is demonstrated, showing proper technique, measurement, and interpretation of results. For body composition, methods such as BMI estimation are introduced, showing learners how to calculate and interpret BMI values for health monitoring.

Linking to Local Context: The teacher relates exercises and body composition examples to local sports, school physical activities, and traditional Liberian games where flexibility and optimal body composition improve performance and reduce injury risk.

 

Learners’ Activities (Expanded):

  • Observe demonstrations and perform static and dynamic stretches, as well as beginner yoga poses, practicing safe technique.
  • Conduct sit-and-reach tests individually or in pairs to measure flexibility and record results.
  • Estimate BMI values and interpret the results to understand personal health status and body composition.
  • Discuss the importance of flexibility and body composition in enhancing performance, reducing injuries, and supporting daily activities.
  • Reflect on personal flexibility and body composition, identifying areas for improvement and setting goals.

 

Assessment Checks:

  • Monitor correct execution of stretches, yoga poses, and flexibility techniques.
  • Check accuracy and understanding of sit-and-reach and BMI measurements.
  • Ask learners to explain the role of flexibility and body composition in overall fitness and performance.
  • Evaluate participation, effort, and ability to connect exercises to local activities and sports.

 

Notes (Expanded & Detailed):

  • Emphasize safe stretching techniques, gradual progression, and avoiding overstretching.
  • Highlight the relationship between body composition, diet, and physical performance, explaining that nutrition and exercise together influence lean mass and fat mass.
  • Include culturally relevant examples of activities requiring flexibility, such as traditional dances, martial arts, or football maneuvers, to demonstrate real-life applications.
  • Encourage learners to track their flexibility and body composition over time, promoting self-awareness and personal fitness planning

 

C – Consolidation (Conclusion & Assessment)
Time: 5–10 minutes
Summary:
• Teacher asks students to recall flexibility exercises, benefits, and basic body composition concepts.
• Students share one personal reflection on how flexibility or body composition affects their performance.

Evaluation Method (Expanded):
• Exit slip/quiz: Students write short answers to:
• Name two flexibility exercises.
• Explain one benefit of flexibility.
• Describe how body composition affects health or performance.
• Teacher collects and reviews for understanding.
• Provide oral feedback before class ends.

Assignment (Expanded):
Follow-up Activity:
• Practice selected stretching or yoga exercises daily for one week. Record flexibility improvements and note observations about posture, mobility, or performance.

Differentiation / Inclusive Strategies
• Struggling Learners: Use assisted stretching or shorter duration exercises.
• Advanced Learners: Perform more challenging stretches or yoga sequences.
• Students with Disabilities: Provide alternative exercises adapted for safe participation and flexibility development.

Teacher’s Reflection (After Class)
• What worked well? ______________________________________________________
• What needs improvement? _________________________________________________
• Students’ engagement level: □ High □ Medium □ Low