Workbench Fittings and Appliances – Basic Technology JSS 1
Basic Technology JSS 1 Second Term Lesson Notes – Week 10
Work Bench Fittings and Appliances
Subject: Basic Technology
Class: JSS 1
Term: Second Term
Week: 10
Age: 10 – 12 years
Duration: 40 minutes
Behavioral Objectives
By the end of the lesson, students should be able to:
- List common workbench fittings and appliances.
- Sketch different workbench fittings and appliances.
- Explain the uses of workbench fittings and appliances.
- Identify different measuring and marking-out tools used in workshops.
Keywords
- Workbench – A sturdy table used for technical and mechanical work.
- Fittings – Fixed components on a workbench that aid in holding materials.
- Appliances – Tools or devices used with the workbench for technical tasks.
- Measuring Tools – Instruments used for taking precise measurements.
- Marking-Out Tools – Tools used to mark guidelines before cutting or shaping materials.
Set Induction (Entry Behavior)
- The teacher displays pictures or real objects of workbench fittings and appliances.
- Students identify and describe their functions.
Learning Resources and Materials
- Drawing book or plain paper
- Pencils (HB, 2B, 4B)
- Eraser
- Ruler
- Real-life workbench tools (if available)
- Charts or posters showing different workbench fittings and appliances
Building Background/Connection to Prior Knowledge
Students have learned about freehand sketching and workshop tools. This lesson builds on that knowledge by introducing specific workbench fittings and appliances.
Embedded Core Skills
- Observation – Identifying different workshop appliances.
- Creativity – Sketching fittings and appliances accurately.
- Analytical Thinking – Understanding the functions of different tools.
- Technical Drawing – Representing objects proportionally.
Lesson Content
1. Meaning of Workbench Fittings and Appliances
- Workbench fittings are fixed components attached to a workbench for securing materials during work.
- Workbench appliances are tools or devices placed on or used with the workbench to assist in cutting, shaping, measuring, or assembling materials.
2. List of Workbench Fittings and Appliances
Below are some common workbench fittings and appliances:
A. Workbench Fittings
- Vice – Holds materials firmly in place.
- Bench Stop – Prevents wood from moving while working on it.
- Bench Hook – Helps to hold wood steady during cutting.
- Holdfast – A clamp used for securing workpieces.
B. Workbench Appliances
- Screwdriver – Used for tightening and loosening screws.
- Mallet – A wooden hammer used with chisels.
- Try Square – Ensures right angles in woodwork.
- Clamps – Used to hold materials together temporarily.
3. Sketch of Workbench Fittings and Appliances
- The teacher demonstrates how to sketch a vice, bench stop, mallet, and clamps.
- Students practice freehand sketching of these fittings and appliances.
4. Uses of Workbench Fittings and Appliances
| Workbench Fitting/Appliance | Uses |
|---|---|
| Vice | Holds materials securely while working. |
| Bench Stop | Prevents materials from sliding on the workbench. |
| Bench Hook | Helps in cutting wood with precision. |
| Holdfast | Clamps workpieces to the bench. |
| Screwdriver | Used for driving in and removing screws. |
| Mallet | Used for hitting chisels or adjusting wooden parts. |
| Try Square | Ensures perfect right angles in marking and cutting. |
| Clamps | Temporarily holds pieces together during assembly. |
5. Measuring and Marking-Out Tools
A. Measuring Tools
Measuring tools are used to take accurate measurements of materials before cutting or assembling. Examples include:
- Ruler – Used for drawing and measuring straight lines.
- Tape Measure – Measures longer distances.
- Calipers – Measures internal and external dimensions.
- Vernier Caliper – Gives precise small measurements.
B. Marking-Out Tools
Marking-out tools are used to draw lines and guides before cutting or shaping materials. Examples include:
- Pencil – Used for general marking.
- Scriber – Used to mark metals.
- Marking Gauge – Used for marking parallel lines on wood.
- Try Square – Marks 90-degree angles.
Evaluation (Fill in the Blanks with Multiple-Choice Options)
- A _______ is a device used to hold materials firmly in place.
a) Mallet
b) Vice
c) Ruler
d) Tape measure - The tool used to mark 90-degree angles is the _______.
a) Bench stop
b) Try square
c) Clamp
d) Vice - _______ is used to temporarily hold materials together.
a) Clamp
b) Mallet
c) Pencil
d) Bench hook - A marking gauge is used to _______.
a) Drive screws
b) Mark parallel lines
c) Hold materials
d) Cut wood - The function of a bench hook is to _______.
a) Hold wood steady while cutting
b) Measure angles
c) Tighten screws
d) Smooth surfaces - Which of the following is a measuring tool?
a) Calipers
b) Vice
c) Clamp
d) Bench stop - A scriber is mainly used for marking _______.
a) Wood
b) Metal
c) Plastic
d) Rubber - The tool used to mark parallel lines on wood is the _______.
a) Marking gauge
b) Mallet
c) Vice
d) Tape measure - A bench stop prevents materials from _______.
a) Sliding
b) Breaking
c) Measuring
d) Folding - The main function of a holdfast is to _______.
a) Clamp workpieces to the bench
b) Drive in screws
c) Cut wood
d) Measure angles
Class Activity Discussion (FAQs and Answers)
- What is a workbench?
- A strong table used for technical work.
- What are workbench fittings?
- Fixed components attached to a workbench for securing materials.
- Why is a vice important?
- It holds materials securely while working on them.
- What is the function of a marking gauge?
- It marks parallel lines on wood.
- Which tool ensures right angles in cutting wood?
- The try square.
- What is a mallet used for?
- Striking chisels and adjusting wooden parts.
- What does a marking-out tool do?
- It helps in making guidelines before cutting materials.
- Why is it important to sketch workshop tools?
- It helps in recognizing and understanding their functions.
- How do clamps assist in technical work?
- They hold materials together temporarily.
- Why do we need measuring tools in workshops?
- To ensure accuracy in dimensions.
Presentation Structure
- Introduction: The teacher introduces workbench fittings and appliances.
- Demonstration: The teacher sketches different tools and explains their uses.
- Student Practice: Students practice freehand sketching of fittings and appliances.
- Correction & Feedback: The teacher checks students’ work.
- Conclusion: Students summarize key points.
Assessment (Short-Answer Questions)
- Define workbench fittings and appliances.
- Name two workbench fittings and their uses.
- List three appliances used in a workshop.
- What is the function of a clamp?
- How is a mallet used in woodwork?
- What is the importance of a try square?
- Mention two measuring tools used in a workshop.
- Explain how to sketch a vice.
- Why is a marking-out tool necessary?
- What is a bench hook used for?