Lesson Notes By Weeks and Term - Senior Secondary 3

Levers of the human body

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TERM – 2ND TERM

WEEK TWO

Class: Senior Secondary School 3

Age: 17 years

Duration: 40 minutes of 5 periods each

Date:

Subject: PHYSICAL EDUCATION

Topic: LEVERS OF THE HUMAN BODY

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

I.) Define levers of the body

II.) Identify the types of levers of the body

III.) Identify the functions of levers of the body

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers, demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures,

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

PRESENTATION

TEACHER’S ACTIVITY

STUDENT’S

ACTIVITY

STEP 1

INTRODUCTION

The teacher explains the meaning of levers of the body and discuss it's types

Students listens attentively to the teacher                                                                          

STEP 2

EXPLANATION

Teacher discusses the functions of levers of the body.

Students exhibit attentiveness and active engagement

STEP 3

NOTE TAKING

The teacher writes a summarized

note on the board

The students

copy the note in

their books

 

NOTE

LEVERS OF THE HUMAN BODY

Body levers are mechanical structures within the human body that facilitate movement by providing a mechanical advantage.

There are three types of body levers:

  1. First-class levers: In this type, the fulcrum (pivot point) is located between the effort (force) and the resistance (load). Examples include the head balancing on the neck and extension of the neck.
  2. Second-class levers: Here, the resistance is located between the fulcrum and the effort. An example is the standing on tiptoes, where the ball of the foot acts as the fulcrum, the body weight is the resistance, and the effort comes from the calf muscles.
  3. Third-class levers: The effort is applied between the fulcrum and the resistance. A common example is the bending of the arm at the elbow, where the effort is applied by the biceps muscle between the elbow joint (fulcrum) and the object being lifted (resistance).

Functions of body levers

The functions of body levers include:

  1. Levers allow the body to apply smaller forces over longer distances to move larger loads or resistances.
  2. By changing the direction or magnitude of force, levers help amplify the effectiveness of muscular contractions.
  3. Levers enable the body to achieve a wide range of motion by leveraging joints and muscles.
  4. They enable the body to perform movements with minimal energy expenditure by optimizing force application and movement mechanics.

EVALUATION: 1. What is body lever?

  1. Identify all the types of body levers
  2. Mention 4 functions of body levers

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively