Lesson Notes By Weeks and Term - Junior Secondary 3

TERM – 2^ND TERM

WEEK EIGHT

Class: Junior Secondary School 3

Age: 14 years

Duration: 40 minutes of 5 periods each

Date:

Subject: BASIC TECHNOLOGY

Topic: METALWORK PROJECTS II

SPECIFIC OBJECTIVES: At the end of the lesson, pupils should be able to

1. Identify tools and materials for metal joining
2. Construct a simple bottle opener

INSTRUCTIONAL TECHNIQUES: Identification, explanation, questions and answers,

demonstration, videos from source

INSTRUCTIONAL MATERIALS: Videos, loud speaker, textbook, pictures, tools and materials for metal joining

INSTRUCTIONAL PROCEDURES

PERIOD 1-2

NOTE

METAL WORK PROJECTS II

Simple metalwork projects are typically hands-on tasks involving the shaping, cutting, and joining of metal to create functional or decorative items. Examples of metal work projects include, Bottle Opener, Trash Bin/Cans, homemade knife, fire pit etc

Tools for metal work

For simple metalwork projects, you can use a variety of basic tools to cut, shape, and join metals. Here's a list of tools commonly used for simple metalwork:

1. Hacksaw: Used for cutting metal rods, pipes, or sheets.
2. Files: Essential for smoothing and shaping metal edges after cutting.
3. Metal Shears or Tin Snips: For cutting thin sheets of metal with precision.
4. Vise: Holds metal securely while you work on it, providing stability.
5. Metal Ruler or Measuring Tape: Essential for accurate measurements.
6. Bench Grinder: Helps with sharpening tools, smoothing metal surfaces, and removing burrs.
7. Metal Marking Tools: Such as a scribe or a metal marker for marking cut lines.
8. Metal Clamps: Used to hold pieces of metal together securely during the work.
9. Drill with Metal Drill Bits: Needed for making holes in metal.
10. Welding Machine: If your project involves joining metals through welding.
11. Safety Gear: This includes safety glasses, gloves, and ear protection, especially when cutting or grinding metal.
12. Bending Tools: Like a metal brake or a vise with bending capabilities, for shaping metal.

Materials for Making a Simple Bottle Opener:

1. Metal Blank: A flat and sturdy piece of metal for the main body of the bottle opener. This can be obtained from a metal sheet or repurposed from old metal objects.
2. Metal Rod or Bar: For the handle of the bottle opener. This should be comfortable to grip and sturdy.

Procedure:

1. Sketch a simple design for your bottle opener, determining the size and shape of the main body and handle.
2. Use the hacksaw to cut the metal blank to the desired shape for the bottle opener. Cut the metal rod to the appropriate length for the handle.
3. Mark and drill a hole near one end of the metal blank where the bottle opener lever will be attached. Ensure the hole is large enough for easy movement.
4. Use metal files, sandpaper, or the grinder to smooth and shape the edges of the metal pieces. Round the edges for safety and comfort.
5. Insert the metal rod through the hole in the metal blank to create the handle. Secure it tightly with welding or by bending the rod at the back and securing it.
6. File any rough edges, polish the metal if desired, and ensure that the lever moves smoothly.
7. Test your bottle opener on a bottle to ensure it functions effectively.

EVALUATION: 1. Identify 5 tools for metal working and stat their uses.

2. Construct a simple bottle opener.

CLASSWORK: As in evaluation

CONCLUSION: The teacher commends the students positively