BASIC SCIENCE AND TECHNOLOGY
THEME – EXCRETORY SYSTEM
PREVIOUS LESSON – Body Image and Self Esteem – Concept of Body Image | Features of Body Image Primary 5 (Basic 5) Term 3 Week 9 Basic Science and Technology
TOPIC – EXCRETORY SYSTEM
2. Meaning of Excretory System
3. Organs Involves in Excretory System
4. Lesson Evaluation and Weekly Assessment (Test)
By the end of the lesson, most pupils should have attained the following objectives –
1. explain the concepts of excretory system.
2. state the organs involved in excretory system.
3. mention the functions different organs involved in excretory system.
The can identify urine, sweat and feces as body waste.
The teacher will teach the lesson with the aid of chart showing excretory system.
METHOD OF TEACHING
Choose a suitable and appropriate methods for the lessons.
Note – Irrespective of choosing methods of teaching, always introduce an activities that will arouse pupil’s interest or lead them to the lessons.
1. Scheme of Work
2. 9 – Years Basic Education Curriculum
3. Course Book
4. All Relevant Material
5. Online Information
CONTENT OF THE LESSON
LESSON 1 – INTRODUCTION
Excretion is one of the most basic functions of life.
It is the process of waste products from our body.
MEANING OF EXCRETORY SYSTEM
Excretory system is the collection of organs with primary function of removing wastes from our body.
PARTS OF EXCRETORY SYSTEM
The parts of the excretory system that responsible for removing waste from the body are as follows:
4. Ureter (kidney tube)
LESSON 2 – MEANING OF BODY WASTE
Body wastes are the materials that are not needed by the body.
TYPES OF BODY WASTE
The body wastes are as follows:
3. Expired gases
4. Bile pigments
5. Excess water
IMPORTANCE OF EXCRETION
1. It helps to maintain salt balance in the blood.
2. It helps to remove materials undigested food and water from the body.
3. It gives a great relief to the body.
4. It reduces anxiety and stress in the body.
5. It regulates body temperature.
LESSON 3 – REVISION AND WEEKLY ASSESSMENT
As stated in performance objectives or lesson evaluation.
To deliver the lesson, the teacher adopts the following steps:
1. To introduce the lesson, the teacher revises the previous lesson. Based on this, he/she asks the pupils some questions;
2. Teacher organizes the pupils in groups or pair depending on the size of the class.
3. Teacher asks as a group or pair to discuss why we eat food and drink water from time to time.
Pupil’s Activities – Participate actively in the group’s or pair’s discussion.
4. Teacher displays a chart showing excretory organs.
5. Teacher lets pupils identify each of the organs and asks them to point where they are found in the body. For example – the chest (liver, lung and kidney), lower abdomen is bladder and urethra, between kidneys and bladder is ureters and our skin.
Pupil’s Activities – Point to the part of the body where excretory organs are found.
6. Teacher listen to the pupils, uses their responses and the chart to introduce the lesson – excretory system.
Pupil’s Activities – Pay attention to the lesson introduction to understand the concept of excretion and excretory system.
5. Teacher leads a discussion on the meaning of excretion and excretory system.
Pupil’s Activities – Differentiate between excretion and excretory system.
6. Teacher explains the meaning of body waste and asks pupils to state types of body waste.
Pupil’s Activities – Explains the meaning of excretion with appropriate examples.
7. Teacher leads a discussion on the importance of excretion.
Pupil’s Activities – Analyze the importance of excretion.
8. Teacher summarizes the lesson on the board with appropriate evaluation.
Pupil’s Activities – Participate actively in the summary of the lesson and write as instructed.
To conclude the lesson for the week, the teacher revises the entire lesson and links it to the following week’s lesson.
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Teacher asks pupils,
1. what is excretion?
2. explain the meaning of excretory system.
3. state 4 organs of excretory system.
4. explain the concept of waste products in the body.
5. state 4 types of body waste.
6. state 5 importance of excretion.