Teacher discusses the process the process of P-type and N-type semi-conductor.
Explain the forward and reverse biasing of semi- conductor.
Students explain the process of formation of P-type and N-type semi-conductor.
Explain the forward and reverse biasing of semi-conductor.
Instructional Materials; Picture of semi-conductor materials, software.
Voltage, current and power rating of diode. Application of diodes (rectification, detection and instrument protection).
Construction of simple circuit using semi-conductive diodes.
Teacher explains the concept of diodes. Guide students to differentiate the types of diodes. Directs discussion on the operational principles of semi-conductor diodes. Explain the rating of diode.
States the application of the different types of diodes.
Constructs simple circuits using semi-conductor diodes.
Assorted kinds of semi-conductor diodes, chart containing pictures of different diodes.
Instructional Materials; Software on semi-conductor diodes.
AUTO MECHANIC WORK
SS 1 FIRST TERM
Definition of safety.
Definition of workshop
Meaning and causes of workshop accidents.
Accident prevention techniques.
Define safety, and workshop.
Explain the causes of workshop accident.
Students participate actively in class discussion.
Charts and posters showing workshop and accident pictures.
SAFETY; accidents prevention techniques.
Explain what accident is, emphasize different ways of preventing accidents- (safety rules and regulations. Students contribute by mentioning other ways of preventing accidents.
Charts and posters, magnetic marker board.
Explain safety devices and their applications. Students participate in mentioning other safety devices.
Safety devices; fire extinguisher, sand, bullats.
Definition of a hand tool. Types and uses of hand tools (measuring, cutting, boring, bench, and golding tools).
Define hand tool, sketch and explain hand tools, types and uses. Students observe hand tools, sketch hand tools, state uses of hand tools.
Hand tools, charts and posters, soft ware of hand tools, projector.
Hand tools maintenance care in handling hand tools.
Teacher explain how to maintain hand tools.
Students state and explain how to maintain hand tools.
Hand tools, cleaning and maintaining items.
WORKSHOP EQUIPMENTS AND MAINTENANCE
Definition of equipments.
Types and uses, e.g compressor, battery charger, wheel balancing and alignment gauge.
Sketch, define and explain types of equipments.
Students observe and sketch equipments.
Equipment chart and posters, equipment soft wares.
MAINTENANCE OF EQUIPMENTS
Types of maintenance
Importance of maintenance.
Explain how to maintain equipments, state and explain types of maintenance, explain importance of maintenance. Students explain how an equipment can be maintained. Equipment soft-ware.
Explanation of chassis,
Types of motor vehicle chassis.
Teacher introduces students to vehicle layout, explain types of chassis.
Students identify the vehicle layout.
Sketch of chassis layout, lesson plan, posters, charts, types of chassis layout models.
Principle components of motor vehicle; identification of engine, transmission system, chassis members, breaking system, suspension system as are mounted on the chassis, diagrammatical illustrations.
Teacher lists the main components, such as engine, gearbox, clutch, chassis rear axle, wad wheels and vehicle body.
Students inspect types of vehicle chassis and various components stated, identify the various components.
Various components of chassis layout.
Functions of each principal components and uses.
Teacher explains the functions and uses of the chassis components. Students participate in the discussion and explain the importance of various components.
Chassis assembly with various components, charts showing the assently.
Types of engine design
Teacher explains the types of engine design, e.g single cylinder, multi cylinder, unline and V-engine designs.
Identification of main components of engine
Teacher lists main components of engine, lists parts of engine, shows and explain sketches of engine, showing details, and explains the importance of various components. Students visit a workshop to observe the various components of engines.
Complete engine chart and posters.
AUTO MECHANIC WORK
SS 1 SECOND TERM
TYPES OF ENGINE
Line diagrams of multi cylinder engines and explanation.
Teacher draws and explain line diagram of multi-cylinder engine. Students participate in the discussion.
Resources; Engine block of a multi-cylinder engine.
Charts and posters.
TYPES OF ENGINE
Types of cylinder liners e.g dry and wet.
Constructional details of cylinder liners.
Teacher illustrates and explains types of cylinder liners.
Differentiate between types of liners and state the advantages and disadvantages. Students identify different cylinder liners, and explain their differences.
Transmission system layout (the engine, clutch, gearbox, universal joint, propeller shaft, rear axle and half shafts.
Teacher sketch and display the layout of transmission system, explain the components of transmission system.
Students identify and examine transmission layout, mention the components in sequential order.
Resources; Charts, transmission models, posters, live vehicle.
Types of drive (front engine front wheel drive, rear engine rear wheel drive.)
Teacher explains types of engine and driving arrangements. Students observe different types of driving arrangements, identify the various types of vehicle and their driving arrangement. Resources; Posters, charts, live vehicles.
Types of suspension system with their functions e.g laminated spring, coil, spring and fusion bar.
Teacher explain and illustrate the types of suspension system (laminated spring, coil spring, fusion bar, etc). list functions of suspension system.
Students observe and identify types of suspension system. Lists functions of suspension systems.
Resources; Suspension system components, charts, posters.
Teacher explain the functions of steering, illustrate the components of steering. Students observe the components of steering system.
Resources; Steering system components, posters, charts.
Types of steering boxes with their functions e.g raw and pinon cam and worm redrculating balls etc.
Differentiate between types of steering boxes. Students identify types of steering boxes.
Resources; Steering boxes, charts, posters.
ENGINE LUBRICATING AND COOLING SYSTEM
Friction, merits and demerits of friction.
Purpose of lubricating system e.g of passages, pump, filters etc.
Teacher explain friction with merits and demerits, explain reasons for lubricating system, demonstrate existence and uses of lubrication, show students types of lubricants, and areas of application. Students rub palms and explain why they become warm. Rub two surfaces on each other with oil and without oil, and note the differences.
ENGINE LUBRICATION AND COOLING SYSTEM
functions of cooling system
Teacher defines cooling system, and emphasize the need for cooling system. Students notice the effect of lack of water in running an engine.
Resources; Posters, charts.
Types of cooling system,
Components of cooling system e.g radiator, water pump, hoses, cooling fan with passages.
Teacher lists and explain types of cooling system, demonstrate the cyculation of water in cooling system and state the role of the role of the system components. students mention in sequence, the function of the components of cooling system. Resources; Line vehicle, cooling system components, charts, posters.