Lesson Notes By Weeks and Term - Junior Secondary School 1

SUBJECT:  BASIC TECHNOLOGY           

CLASS:  JSS1

DATE:

TERM: 3RD TERM

REFERENCE MATERIALS 

• MELROSE, Basic Science and Technology Book 1
• NERDC, Basic Technology for JSS, Book 1

PLANES

We have:

1. JACK PLANE
2. SMOOTHING PLANE
3. SPOKESHAVE
4. THE FORE PLANE
5. THE TRYING PLANE

JACKPLANE

The jackplane is so called because it is a general-purpose plane. It is used generally to plane rough surface of timber and to prepare timber to size. The length of the plane is 250mm – 380mm.

SMOOTHING PLANE

It is used after the jackplane for final cleaning up of the surfaces of wood. It is 140 –250mm long.

EVALUATION QUESTIONS

1. Mention three types of plane.
2. State the functions of the planes mentioned above.

THE CHISEL

A chisel is a chipping tool made from high carbon steel. It is used for shaping wood where finishing by other means such as filling can be carried out.

TYPES OF CHISEL

1. The flat chisel: this is used for general purpose in the workshop such as leveling surfaces and removing rough surfaces.
2. The cross cut chisel: this is used for making narrow groves, key ways and slots in a shaft or in a hole.
3. The round nose chisel: this is used for making oil grooves in shaft or in a hole.
4. Thediamond nose chisel: this is used for cutting inside corners and “Vee” grooves.

EVALUATION QUESTIONS

1. Define chisel as a cutting tool.
2. Mention four types of chisel and state their uses.

GENERAL EVALUATION QUESTIONS

1. State the uses of the following wood work cutting tools:

• Dovetail saw
• Tenon saw
• Spokeshave

1. What are boring tools?
2. Mention four (4) examples of boring tools and state their uses.
3. Mention four (4) types of chisel and state their uses.

READING ASSIGNMENT

Read about woodwork tools and appliance: driving tools ad holding tools

REFERENCE BOOK

NERDC Basic Technology for JSS book 1.

WEEKEND ASSIGNMENT

1. The types of saw that can perform both the work a rip and cross-cut saw is in ____ (a) Tenon saw (b) Dovetail saw (c) Panel saw (d) Back saw
2. When sharpening, oil is added to the sharpening stone to avoid ____ (a) burning of the stone  (b) cutting of the stone  (c) clogging of the work (d) clogging of the stone 
3. The type of saw used for complete shape curves in plywood and veneer is ____  (a) Tenon saw (b) Fret saw (c) Dovetail saw (d) back saw 
4. 1000m: 1m is _____ scale drawing. (a) Full size (b) enlarge (c) reduced (d) proportioned. 
   
5. ____ Provides accurate representation of objects (a) freehand sketching  (b) ordinary drawing (c) scale drawing (d) art work

THEORY

• State five (5) types of saw you know.

• Mention three (3) examples of boring tools.