Class: Junior Secondary School 2 (JSS2, JSS 2)
Term: 1st Term
Week: 5
Age: 13 years
Duration: 45 minutes
Subject: Basic Science And Technology
Curriculum Theme: Basic Science
Previous Lesson: Uniqueness of Human Beings: Reasoning, Problem Solving, Inquisitiveness, Observation, Measurement and Inference
Topic: Measurement Of Growth And Development Changes
Subject Matter: Growth changes in: Height, Weight, Size.

Specific Objectives

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

Cognitive Domain:
(a) Identify the major changes that occur in growth and development.
(b) State the ways of measuring growth changes in height, weight, and size.
Affective Domain:
(a) Appreciate the importance of monitoring body growth and development.
Psychomotor Domain:
(a) Demonstrate how to measure height, weight, and size using simple instruments.
Social Domain:
(a) Work cooperatively in small groups to practice measurement of growth changes.

Reference Materials

The following resources was used in planning this lesson:

9 Years Basic Education Curriculum
Lagos State Unified Scheme of work for Junior Secondary Schools
World Health Organization (WHO) – The WHO Child Growth Standards
Relevant Textbooks

Instructional Materials

The teacher will teach this lesson with the aid of:

Measuring tape or stadiometer
Weighing scale
Measuring tape for body size
Chart showing stages of growth and development
Graph paper to record changes
Whiteboard and markers

Rationale for the Lesson

This lesson enables pupils to understand the physical changes that occur during growth and development, and how to measure these changes for healthy living.

Prerequisite/Previous Knowledge

Pupils are familiar with the general concept of growth and development and have observed physical changes in themselves and their peers as they grow.

Lesson Content/Board Summary

Measurement of Growth and Development Changes

Growth and development involve observable changes in the human body over time. These changes can be measured in terms of height, weight, and size. Monitoring these measurements helps to assess proper health and development.

Growth Changes in Height

Height refers to the measurement of how tall a person is from the base of the feet to the top of the head. It increases as a person grows, especially during childhood and adolescence.

The following are ways height changes are measured:

Using a stadiometer or measuring tape placed against a wall.
Standing upright without shoes while the measurement is taken.
Recording the measurement in centimeters or meters.

Growth Changes in Weight

Weight is the measure of how heavy a person is, usually in kilograms. It reflects the amount of body mass and can show if growth is normal or not.

The following are ways weight changes are measured:

Using a weighing scale.
Standing still and balanced on the scale without carrying anything.
Recording the measurement in kilograms.

Growth Changes in Size

Size refers to the measurement of body parts such as chest, waist, arm, and head circumference. It shows how the body is developing in proportion.

The following are ways size changes are measured:

Using a flexible measuring tape.
Measuring around the chest, waist, or head depending on the area of growth.
Recording the measurement in centimeters or inches.

Teaching Methods/Instructional Techniques:

Lecture, Discussion, Explanation, Demonstration, Group Work, Question and Answer, Visual Aids

Instructional Procedures

To deliver this lesson, the teacher will adopt the following steps:

Step 1: Introduction

Time: 5 minutes
Teaching Skill: Set Induction
Teacher’s Activity: Teacher asks pupils questions about how they know they are growing and recalls earlier lessons on growth and development.
Pupils’ Activity: Pupils respond with answers about their personal growth experiences.
Learning Point: Pupils are prepared to understand how growth changes can be measured.

Step 2: Growth Changes in Height

Time: 8 minutes
Teaching Skill: Explanation
Teacher’s Activity: Teacher explains how height is measured and demonstrates using a measuring tape.
Pupils’ Activity: Pupils observe the demonstration and volunteer to be measured.
Learning Point: Pupils understand how height changes are measured.

Step 3: Growth Changes in Weight

Time: 8 minutes
Teaching Skill: Demonstration
Teacher’s Activity: Teacher demonstrates the use of a weighing scale and records sample weights on the board.
Pupils’ Activity: Pupils participate by stepping on the scale to be weighed.
Learning Point: Pupils understand how to measure body weight.

Step 4: Growth Changes in Size

Time: 8 minutes
Teaching Skill: Discussion and Demonstration
Teacher’s Activity: Teacher explains how body size is measured (e.g., chest, waist) and demonstrates with measuring tape.
Pupils’ Activity: Pupils observe and practice in pairs by measuring each other’s arm or chest size.
Learning Point: Pupils understand how to measure body size and development.

Step 5: Note-Taking

Time: 5 minutes
Teaching Skill: Explanation
Teacher’s Activity: Teacher dictates or writes the board summary for pupils to copy into their exercise books.
Pupils’ Activity: Pupils write the notes.
Learning Point: Pupils have a written record of growth measurement methods.

Step 6: Evaluation/Review

Time: 6 minutes
Teaching Skill: Questioning
Teacher’s Activity: The teacher evaluates the learning by asking the following questions:

State two ways height can be measured.
Mention the instrument used in measuring weight.
What does body size measurement involve?
Pupils’ Activity: Pupils answer questions orally.
Learning Point: Pupils demonstrate understanding of measurement of growth changes.

Step 7: Conclusion

Time: 3 minutes
Teaching Skill: Reinforcement
Teacher’s Activity: Teacher summarizes the lesson and emphasizes the importance of measuring growth regularly for healthy living.
Pupils’ Activity: Pupils listen and ask questions.
Learning Point: Pupils appreciate the value of monitoring growth and development.

Lesson Keywords

Growth – increase in body size and structure over time
Development – changes in body functions and abilities as one matures
Height – measurement of how tall a person is
Weight – measurement of how heavy a person is
Size – measurement of body parts like chest, waist, and head

Differentiation

Teacher provides step-by-step demonstrations for slower learners and allows peer support, while advanced learners assist in taking measurements and explaining results.

Note for teachers using this lesson plan

Ensure pupils participate actively in demonstrations. Correct any misuse of measuring instruments and emphasize accuracy in recording measurements.