Source of Dangers and Insecurity – Meaning and Examples of Dangerous Chemicals | Effects of Dangerous Chemicals on Health Primary 2 (Basic 2) Term 1 Week 6 Security Education
NATIONAL VALUES EDUCATION
THEME – ELEMENTS OF SECURITY
PREVIOUS LESSON – Source of Dangers and Insecurity – Meaning and Types of Food Poisoning | Symptoms and Treatment of Food Poisoning Primary 2 (Basic 2) Term 1 Week 5 Security Education
TOPIC – DANGEROUS CHEMICALS
2. Meaning and Examples Dangerous Chemicals
3. Effects of Dangerous Chemicals on Health
4. How Dangerous Chemicals get into the Body
5. How to Prevent or Reduce the Effects of Dangerous Chemicals
6. Revision and Weekly Assessment (Test)
By the end of the lesson, most of the pupils should have attained the following objectives –
1. explain the meaning of dangerous chemicals.
2. state the examples of dangerous chemicals.
3. mention the effects of dangerous chemicals on health.
4. identify how dangerous chemicals enter the body.
5. discuss ways to prevent or reduce effects of dangerous chemicals.
Some of the pupils can identify some of the dangerous chemicals and their effects if not handle properly.
The teacher will teach the lesson with the aid of dangerous chemicals such as kerosene, sniper, etc.
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 (REVISION)
Security is the state of being free from all dangers or harms at home, in the school or anywhere you are.
Insecurity is when you are not feeling safe or free from dangers.
The feeling of anxiety, fear, doubt, panic, trouble, worry, etc. are signs of insecurity.
Danger is the possibility that something harmful will happen.
Harm can be caused by people, animals, things and other factors.
SOURCE OF DANGERS AND INSECURITY
The source of dangers and insecurity are as follows:
4. Dangerous chemicals
6. Stranger, etc.
Dangerous chemical is any substances that has the potential to cause harm.
These substance can be gas, liquid or solid.
Dangerous chemicals are also known as hazardous chemicals.
EXAMPLES OF DANGEROUS CHEMICALS
The examples of dangerous chemicals are as follows:
4. Pesticides, herbicides and insecticide such as sniper, etc.
5. Diesel fuel
6. Cylinder gas
8. Cleaning agents
10. Smoke, etc.
LESSON 2 – HOW DANGEROUS CHEMICALS ENTER THE BODY
Dangerous chemicals can enter the body through several ways,
1. Inhalation – breathing in
2. Absorption – through skin or eyes
3. Ingestion – eating or swallowing
4. Injection – through cuts or open wounds
EFFECTS OF DANGEROUS CHEMICALS ON HEALTH
The effects of dangerous chemicals are as follows:
1. It damage the organ.
2. It weakening the immune system.
3. It causes allergies or asthma.
4. It causes reproductive problems and birth defects.
5. It affects the mental, intellectual or physical development of children.
6. It causes cancer.
7. It causes memory loss.
HOW PREVENT THE EFFECTS OF DANGEROUS CHEMICALS
Dangerous chemicals are toxic substance that are very hazardous if not handle properly.
Dangerous chemicals can be prevented or reduced its risks by –
1. Make use of good housekeeping and personal hygiene.
2. Follow safe work instructions and procedures given by your supervisor.
3. Understand the risks and ways to protect yourself.
4. Make use of face or nose mask.
5. Make use of the appropriate chemical kits.
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 pupils in groups or pairs depending on the size of the class and available instructional materials.
3. Teacher displays sample of kerosene, petrol, sniper, table water, palm oil, salt, etc.
4. Teacher asks pupils to state the uses of each of the item displays.
5. Teacher asks pupils separate items that are good for our health from the ones that are not.
Pupil’s Activities – Learners identify dangerous chemicals and its effects on human health.
6. Teacher uses the pupil’s relevant responses to the introduce the lesson.
Pupil’s Activities – Learners pay attention to the lesson introduction to understand the concept of dangerous chemicals.
7. Teacher leads a discussion on the meaning of dangerous chemicals with appropriate examples.
Pupil’s Activities – Learners explain of dangerous chemicals with appropriate examples.
8. Teacher guides pupils to identify and state how dangerous chemicals get into our body, effects dangerous chemicals on health and how it can prevented.
Pupil’s Activities – Learners analyze the effects of dangerous chemicals human health.
9. Teacher summarizes each lesson on the board with appropriate lesson evaluation.
Pupil’s Activities – The pupils participate actively in the summary of the lesson by responding correctly to the questions 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.
Teacher ask pupils to:
1. explain the meaning of dangerous chemicals.
2. state 5 examples of dangerous chemicals.
3. mention 4 effects of dangerous chemicals on health.
4. give 4 ways dangerous chemicals enter the body.
5. discuss 4 ways to prevent or reduce effects of dangerous chemicals.