Lesson Plan for JSS Three (Age 11)
Subject: Basic Technology
Class: JSS 1
Week of the Second Term: 8th Week
Topic: Freehand Sketching of Workshop Tools
Sub-Topic: Sketching of Simple Workshop Hand Tools (Building, Woodwork, Metalwork)
Objectives
At the end of the lesson, students should be able to:
- Identify and describe the purpose of various simple workshop hand tools used in building, woodwork, and metalwork.
- Create accurate freehand sketches of selected workshop hand tools, focusing on proportions and key features.
- Demonstrate the ability to apply basic sketching techniques learned in previous lessons to represent tools effectively.
Entry Behaviour
Students should already have knowledge of basic sketching techniques and an understanding of common workshop hand tools used in building, woodwork, and metalwork.
Instructional Materials
- Textbook
- Drawing paper
- Pencils
- Visual aids (charts and images of workshop tools)
Reference Materials
- Olatunji, P.A., Onwuka, H., & Jibo, J. (2014). Basic Technology JSS1. Spectrum Books Limited, Lagos.
- Makanjuola, S.A., Galadanchi, I., Richardson, P.K., Offurum, R.I.N., Sofolahan, J.A.O., & Dare, A.B. (2014). Basic Technology for Nigerian Junior Secondary Schools Book 1. University Press PLC, Lagos.
Lesson Content
Freehand Sketching of Workshop Tools
Freehand sketching is an excellent way to represent various workshop tools used in building, woodwork, and metalwork. Below are descriptions of several simple hand tools along with tips for sketching them.
Hammer
- A hammer typically has a heavy head and a long handle. The head may be flat or clawed, depending on its purpose.
- Sketching Tips: Start by sketching a rectangle for the handle and a slightly wider rectangle for the hammerhead. Add details like the claw or flat side, and use lines to indicate the texture of the handle.
Screwdriver
- A screwdriver consists of a metal shaft with a flat or Phillips head, attached to a handle.
- Sketching Tips: Draw a straight line for the shaft and a broader oval shape at one end for the handle. For the screwdriver head, sketch a small rectangle at the opposite end, ensuring it has a slight angle.
Saw
- A hand saw features a serrated blade and a handle. It’s used for cutting wood.
- Sketching Tips: Begin with a long, slightly curved line for the blade. Add a triangular or rectangular handle at one end. Include small triangular shapes along the blade edge to represent the teeth.
Chisel
- A chisel has a sharp, flat blade and a handle. It’s used for carving or cutting hard materials.
- Sketching Tips: Draw a straight line for the handle, then create a flat, rectangular shape at one end to depict the blade. Add detail to the blade by sketching lines to show its sharp edge.
Pliers
- Pliers have two levers that pivot at a point, with jaws for gripping and cutting.
- Sketching Tips: Start with two elongated shapes for the handles, joined by a small circle for the pivot. Sketch the jaws at the end of the handles, giving them a slightly curved shape.
Wrench
- A wrench has a fixed or adjustable jaw and a long handle, used for turning nuts and bolts.
- Sketching Tips: Draw a straight line for the handle and a U-shaped figure at one end for the jaw. For an adjustable wrench, add a movable section on the jaw.
Tape Measure
- A tape measure consists of a flexible measuring tape housed in a casing.
- Sketching Tips: Sketch a rectangular casing with a small button on the front. Extend a curved line to represent the tape, and include measurement markings along its length.
Level
- A level is a straight tool with a bubble in a vial to determine if a surface is horizontal or vertical.
- Sketching Tips: Draw a long rectangle for the body and add a small circle in the center to represent the bubble vial. Include additional lines to indicate the markings on the level.
