Basic Technology JSS 1 Second Term Lesson Notes – Week 1

Revision of Last Term’s Topics: Meaning and Types of Metals, Meaning, Types and Safety in Workshop, Properties of Materials (Plastic, Ceramics, Glass, Rubber, etc.)

Subject: Basic Technology

Class: JSS 1

Term: Second Term

Week: 1

Age: 10 – 12 years

Duration: 40 minutes

Behavioral Objectives

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

1. Recall the meaning and types of metals.
2. Explain the meaning and types of workshop safety.
3. Identify different properties of materials such as plastic, ceramics, glass, and rubber.
4. Understand the importance of safety precautions in the workshop.

Keywords

• Metals – Solid materials that are good conductors of heat and electricity.
• Workshop Safety – Rules and precautions to prevent accidents in a workshop.
• Plastic – A synthetic material that can be molded into different shapes.
• Ceramics – Hard, non-metallic materials made by heating clay or other minerals.
• Glass – A transparent, breakable material made from sand.
• Rubber – An elastic material obtained from plants or synthesized chemically.

Set Induction (Entry Behavior)

• The teacher asks students to recall some of the topics discussed in the previous term.
• The teacher displays different materials such as a metal spoon, plastic cup, glass bottle, and rubber band, asking students to name them and describe their properties.

Learning Resources and Materials

• Samples of metals (e.g., iron, aluminum, copper)
• Plastic items (e.g., plastic bottles, cups)
• Ceramic plates or tiles
• Glass bottles
• Rubber bands or erasers
• Workshop safety signs and posters

Building Background/Connection to Prior Knowledge

Students have previously learned about different materials and their uses. This lesson will reinforce their understanding of metals, properties of materials, and workshop safety rules.

Embedded Core Skills

• Critical Thinking – Identifying materials and their properties.
• Collaboration – Group discussions on workshop safety.
• Communication – Explaining concepts in class discussions.

Lesson Content

1. Meaning and Types of Metals

Meaning of Metals

Metals are solid materials that conduct electricity and heat. They are usually strong, shiny, and can be molded into different shapes.

Types of Metals

Metals are classified into:

1. Ferrous Metals – Contain iron and are magnetic (e.g., iron, steel).
2. Non-Ferrous Metals – Do not contain iron and are non-magnetic (e.g., aluminum, copper).

2. Meaning, Types, and Safety in the Workshop

Meaning of Workshop Safety

Workshop safety refers to the rules and measures used to prevent accidents and injuries in a workshop.

Types of Workshop Safety

1. Personal Safety – Wearing safety gear such as gloves, goggles, and helmets.
2. Machine Safety – Proper handling of machines to avoid accidents.
3. Fire Safety – Use of fire extinguishers and avoiding flammable materials near fire sources.

General Safety Rules in the Workshop

• Always wear protective clothing.
• Do not run or play in the workshop.
• Use tools for their correct purpose.
• Keep the workshop clean and organized.

3. Properties of Materials

Different materials have unique properties that determine their use.

Evaluation (Fill in the Blanks with Multiple-Choice Options)

1. Metals are good conductors of _______.
   a) Electricity
   b) Air
   c) Water
   d) Rubber
2. A workshop is a place where _______ are used.
   a) Books
   b) Tools and machines
   c) Clothes
   d) Fruits
3. Ferrous metals contain _______.
   a) Aluminum
   b) Iron
   c) Copper
   d) Glass
4. One example of a plastic material is _______.
   a) Tiles
   b) Rubber band
   c) Water bottle
   d) Windowpane
5. The best way to prevent accidents in a workshop is by following _______.
   a) Games
   b) Safety rules
   c) Fashion trends
   d) Noisy behavior
6. Rubber is known for its _______ property.
   a) Hardness
   b) Elasticity
   c) Transparency
   d) Brittle nature
7. Non-ferrous metals do not contain _______.
   a) Iron
   b) Aluminum
   c) Copper
   d) Zinc
8. Which of these is a property of ceramics?
   a) Elastic
   b) Brittle
   c) Conductive
   d) Soft
9. Glass is made from _______.
   a) Rubber
   b) Wood
   c) Sand
   d) Paper
10. Wearing safety goggles protects the _______.
    a) Legs
    b) Eyes
    c) Hands
    d) Nose

Class Activity Discussion (FAQs and Answers)

1. What are metals used for?
   • Metals are used for making tools, machinery, vehicles, and electrical wires.
2. Why is safety important in the workshop?
   • Safety prevents injuries and accidents while using tools and machines.
3. How can we identify ferrous metals?
   • Ferrous metals are magnetic and contain iron.
4. What is the difference between plastic and glass?
   • Plastic is lightweight and flexible, while glass is brittle and transparent.
5. Why should we not play in the workshop?
   • Playing can cause accidents and injuries.
6. What happens if we do not follow workshop safety rules?
   • It may lead to injuries, fire hazards, or damage to equipment.
7. How is rubber different from ceramics?
   • Rubber is elastic and flexible, while ceramics are hard and brittle.
8. Why is plastic widely used?
   • It is cheap, lightweight, and can be easily shaped.
9. What safety gear should we wear in a workshop?
   • Gloves, goggles, helmets, and aprons.
10. How can we make glass stronger?

• By using toughened or reinforced glass.

Presentation Structure

1. Introduction: The teacher revises previous topics on materials and workshop safety.
2. Discussion: Students observe different materials and identify their properties.
3. Student Participation: Students answer questions on materials and workshop safety.
4. Correction & Explanation: The teacher provides feedback and clarifies misconceptions.

Assessment (Short-Answer Questions)

1. Define metals and give two examples.
2. Mention two types of workshop safety.
3. List three properties of plastics.
4. What are the differences between ferrous and non-ferrous metals?
5. State two safety rules in a workshop.
6. What is glass made from?
7. Why is rubber elastic?
8. How can we prevent accidents in a workshop?
9. Give one example each of ceramic, plastic, and rubber.
10. Why do we wear gloves in a workshop?

Conclusion

The teacher marks students’ work, provides feedback, and reinforces key points from the lesson.