Welcome great EduPodian, here is your Second Term JSS3 Basic Technology Scheme of Work and the excerpt of the Second Term JSS3 Basic Technology Lesson Note.
Scheme of Work:
1. Revision of first term work
2. Mechanical energy transmission system. (a) Friction (b) effects of friction (c) advantages and disadvantages of friction (d) methods of reducing friction (e) belt and chain drive (f) comparison with the gear drive
3. Mechanical energy transmission system.Gear. (i) Gears and gearing systems and related calculations. (ii) types of gears; internal gear, external gear,… (iii) uses of gears; power transmission, changing of direction, for selecting speed(iv) gear ratios and speed ratio (V) friction between meshed gears.
4. Mechanical energy transmission system. Motion (i) linear motion (ii) lever arrangement to produce linear motion (iii) uses of slides and slot in mechanical system (iv) Rotary motion, types of rotary motion – oneway rotary motion and the reversible rotary motion. (v) Conversion of rotary motion to linear motion
5. Mechanical energy transmission system. Airflow. (i) Speed and pressure relationship in air flow. (ii) Variation of air pressure and air speed and their applications. Pneumatics; (i) simple hydraulics and pneumatics devices; simple force pump, double acting pump,… (ii) Compressed air devices, hydraulic jacks, simple garden sprinkler, reaction turbine, water wheel
6. Simple electrical wiring: (a) electrical circuit: series and parallel circuits (b) wiring tools and materials; pliers, hammer, screw driver, clips, wooden blocks, cables, etc. (c) accessories: switches, lamp holders, etc
7. Building (a) foundation (i) definition and function of foundation: support and weight of walls, roofs and inhabitants (ii) foundation types: strip, stepped, raft etc. (iii) types and properties of soil (iv) hand tools and plant for excavation: diggers, shovels, excavator, etc. (b) walls; (i) materials for making walls: grass, zinc, curtain, bricks, etc. (ii) types of walls: walls grass, zinc, curtain bricks etc. (iii) materials for bonding
8. Building (c) floors: (i) floor: basement, ground floor, first floor, etc. (ii) DPC (d) doors, windows and openings (i) Doors: flush door, glazed, sliding, revolving, etc. (ii) windows: louver, sliding, casement, etc (iii) lintel
9. Building (e) Roofs (i) types of roof: flat roof, double pitched, lean-to Gable, etc (ii) roofing materials: grass, zinc, aluminium, etc. (f) simple blue print reading (I) sanitary wares: sink, bath, showers, etc. soak-away, septic tank, socket, windows, doors, room, etc.
10. Practical projects.
WEEK ONE: Revision of last terms’ work
WEEK TWO
CLASS: Basic 9
TOPIC: Mechanical Energy Transmission system
Period one: Friction
Content: -Definition of friction
– Nature/characteristics of friction
– Types of frictional force
– Effect of friction
– Advantages of friction
– Disadvantages of friction
– Methods of reducing friction
Definition of friction
Friction can be defined as a force which opposes motion.
It is a force which stops/prevents motion. It acts whenever there is motion or tendency for something to move. i.e friction (or frictional force) is absent if there is no motion or if there is no force intending to cause motion.It stops your car when the brake is applied. It prevents your foot from slipping backward when you walk.
Friction can also be defined as a force of attraction between the molecules of two bodies in contact which prevents relative motion between the two bodies…
LESSON NOTE DOWNLOAD…. CLICK HERE to download the complete lesson note.
You can get access to this lesson note as well as every other lesson notes on this website and that is all our Primary School lesson notes for all subjects from Pry1 to Pry6 and all our Secondary school lesson notes for all subjects from JSS1 – SS3, (first, second & third term), simply Click Here now!
Comments