Exploring Wood and Metal: Their Uses in Everyday Life Basic Technology JSS 2 First Term Lesson Notes Week 3

Basic Technology JSS 2 First Term Lesson Notes Week 3

Subject: Basic Technology
Class: JSS 2
Term: First Term
Week: 3
Age: 12 years
Topic: Materials Used and Their Common Uses
Sub-topic: I. Wood – Common Uses, II. Metal – Common Uses, Specific Uses of Ferrous and Non-Ferrous Metals and Their Alloys
Duration: 40 minutes

Behavioural Objectives:

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

1. Identify the common uses of wood.
2. Explain the uses of metals.
3. Distinguish between ferrous and non-ferrous metals and their specific uses.

Keywords:

• Wood: A natural material from trees.
• Metal: A solid material that is typically hard and malleable.
• Ferrous Metals: Metals containing iron.
• Non-Ferrous Metals: Metals that do not contain iron.

Set Induction:

The teacher displays various wooden and metal items, asking students to guess their uses and materials.

Entry Behaviour:

Students may have prior knowledge of different materials and their general applications in daily life.

Learning Resources and Materials:

• Samples of wood (e.g., planks, plywood)
• Samples of metals (e.g., iron, aluminum)
• Visual aids (charts and diagrams)
• Videos showing the uses of wood and metal

Building Background/Connection to Prior Knowledge:

Students are likely aware of materials used in construction and everyday items like furniture and tools.

Embedded Core Skills:

• Analytical thinking
• Communication skills
• Practical application

Learning Materials:

• Material identification charts
• Reference books on materials and their uses

Reference Books:

• Lagos State Scheme of Work
• Basic Technology for Junior Secondary Schools by NERDC

Instructional Materials:

• Wood and metal samples
• Projector for videos
• Charts showing uses of different materials

Content:

I. Wood – Common Uses

1. Furniture: Wood is commonly used to make tables, chairs, and cabinets due to its strength and aesthetic appeal.
2. Construction: Used for framing houses, flooring, and roofing.
3. Tools: Handles for tools (like hammers and saws) are often made from wood.
4. Crafts and Artwork: Wood is used for carving and making decorative items.
5. Paper Production: Wood pulp is the primary material for making paper.

II. Metal – Common Uses

1. Construction: Metals like steel are used in building structures, bridges, and roads.
2. Transportation: Metals are used in making vehicles, airplanes, and ships.
3. Manufacturing: Tools, machinery, and equipment are often made from metal.
4. Electronics: Metals like copper are used in electrical wiring and components.

Specific Uses of Ferrous Metals:

• Iron: Used in construction (reinforced concrete), machinery, and tools.
• Steel (an alloy of iron): Used for structural beams, car bodies, and appliances due to its strength and durability.

Specific Uses of Non-Ferrous Metals:

• Aluminum: Lightweight, used in aircraft, packaging (cans), and electrical conductors.
• Copper: Excellent conductor of electricity, used in wiring and plumbing.
• Lead: Used in batteries and radiation shielding.

15 Fill-in-the-Blank Questions:

1. Wood is commonly used to make ________.
   a) Cars
   b) Furniture
   c) Electronics
   d) Plastics
2. ________ metals contain iron.
   a) Non-ferrous
   b) Ferrous
   c) Noble
   d) Inert
3. A common use of aluminum is in ________.
   a) Furniture
   b) Wiring
   c) Roads
   d) Furniture polish
4. The primary material for making paper is ________.
   a) Metal
   b) Wood
   c) Plastic
   d) Glass
5. Steel is an alloy of ________.
   a) Copper
   b) Aluminum
   c) Iron
   d) Zinc
6. Tools like hammers often have ________ handles.
   a) Plastic
   b) Wood
   c) Glass
   d) Metal
7. ________ metals are used in electrical wiring.
   a) Ferrous
   b) Non-ferrous
   c) Mixed
   d) Composite
8. Wood is used in ________ for its aesthetic appeal.
   a) Construction
   b) Electronics
   c) Plastics
   d) Agriculture
9. A common use of copper is in ________.
   a) Vehicles
   b) Plumbing
   c) Furniture
   d) Toys
10. Iron is primarily used in ________ structures.
    a) Lightweight
    b) Fragile
    c) Heavy-duty
    d) Decorative
11. Aluminum is often used in ________ because it is lightweight.
    a) Aircraft
    b) Furniture
    c) Roads
    d) Walls
12. Non-ferrous metals do not contain ________.
    a) Plastic
    b) Iron
    c) Steel
    d) Wood
13. Wood is a primary material for ________ production.
    a) Metal
    b) Paper
    c) Plastic
    d) Glass
14. The use of steel in vehicles is due to its ________.
    a) Weight
    b) Flexibility
    c) Strength
    d) Transparency
15. The handles of many tools are made from ________.
    a) Wood
    b) Stone
    c) Rubber
    d) Metal

15 FAQs with Answers:

1. What are common uses of wood?
   Wood is used for furniture, construction, tools, crafts, and paper production.
2. What is the difference between ferrous and non-ferrous metals?
   Ferrous metals contain iron, while non-ferrous metals do not.
3. What are some uses of ferrous metals?
   Ferrous metals like iron and steel are used in construction, machinery, and tools.
4. Why is aluminum popular in transportation?
   Aluminum is lightweight and resistant to corrosion, making it ideal for aircraft and vehicles.
5. What is a common use of copper?
   Copper is widely used in electrical wiring due to its excellent conductivity.
6. How is steel different from iron?
   Steel is an alloy of iron and carbon, which gives it enhanced strength and flexibility.
7. What type of wood is often used for furniture?
   Hardwoods like oak and mahogany are commonly used for their durability and appearance.
8. Why is wood used for tools?
   Wood is strong yet lightweight, making it ideal for tool handles.
9. What is one of the main uses of lead?
   Lead is used in batteries, especially in cars.
10. What makes non-ferrous metals valuable?
    Non-ferrous metals are often lighter, more resistant to corrosion, and have specific properties useful in various applications.

Presentation Steps:

Step 1:

Teacher revises the previous lesson by discussing the importance of materials in technology.

Step 2:

Teacher introduces the topic of materials, focusing on wood and metals.

Step 3:

Teacher guides students through the common uses of wood and metals, encouraging discussion.

Teacher’s Activities:

• Explain and demonstrate the uses of wood and metals.
• Show samples and videos of materials in use.
• Engage students in a discussion about their experiences with these materials.

Learners’ Activities:

• Observe samples and participate in discussions.
• Work in groups to identify additional uses for wood and metal.
• Complete the fill-in-the-blank questions and FAQs.

Assessment:

1. What are common uses of wood?
2. List the differences between ferrous and non-ferrous metals.
3. Describe one specific use of steel.
4. Why is aluminum used in aircraft?
5. What are the properties of wood that make it suitable for furniture?

Evaluation Questions:

1. Define wood and its common uses.
2. What is a ferrous metal? Give an example.
3. Name a non-ferrous metal and its use.
4. Why is it important to know about materials?
5. How does the use of metals benefit construction?

Conclusion:

The teacher summarizes the lesson, emphasizing the importance of understanding materials and their applications in technology.