Access Lagos State Free Radio,Television and Electronics Works Scheme of work SSS3. SS3 Electronics Works Curriculum for Secondary School –Schemeofwork
Radio and Television Scheme of Work SSS3 First Term
| WKS | TOPICS | LEARNING OBJECTIVES | LEARNING ACTIVITIES | EMBEDDED CORE SKILLS | LEARNING RESOURCES |
| 1 | SAFETY CHECKS IN SERVICING TELEVISION WORKSHOP Power supply Picture tube Extra high voltage section Component rating | By the end of the lesson, students should be able to: discharge smoothening capacitors in the power supply section of the Television Clean debris and dust collected around high, voltage cage on the anode of the tube Take care and dispose picture tube property. | student as a class clean debris and dust collected around high voltage cage on the anode of the tube Students in pairs discharge smoothening capacitors in the power section of the television | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Television Set, Screw drivers, digital voltmeter WEB RESOURCES https://www.uksafetystore.com/resources/safety-checklist/worksho |
| 2 | KIRCHHOFF’S LAW Definition of Kirchhoff’s first and second laws Diagram and Algebraic expression of Kirchhoff’s laws Calculation involving Kirchho1s laws Applications of Kirchhoff’s laws | By the end of the lesson, students should be able to: * define and state vector diagram of Kirchhoff’s laws: the current law and the voltage law * explain the current law using vector diagram * solve simple numerical problem involving current and voltage law. | Students as individuals state the algebraic expression for Kirchhoff’s laws. They use vector diagram to explain the laws Students in small groups solve simple numerical problem involving current and voltage law | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Calculator, Ruler, Pencil, Graph Sheet WEB RESOURCES https://www.allaboutcircuits.com/textbook/direct/current/chpt-6/kirchhoff’s-voltage-law-kvl/ |
| 3 | FAULT FINDING EQUIPMENT 1dentifiction, uses and operations oft Oscilloscope Signal 1acer Digital Frequency Counter. T.V Analyzer | By the end of the lesson, students should be able to: * Identify each of the Instrument * Explain the operations, Uses of functional parts and limitation of fault finding equipment * Localizing fault to a component using test equipment | Students in small groups discuss the techniques for’ troubleshooting in a Television set, list the common faults in the various stages of a Television e.g. receiver starting with a tuner stage, IF amplifier stage, video amplifier stage etc. | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Black and White T.V signal generator,signal tracer, POW apply pattern generator, I.F sweep generator WEB RESOURCES https://accendoreliability.com/fault/finding-a-techniqueworks/ |
| 4 | RESISTIVE, INDUCTIVE, CAPACITIVE RLC CIRCUITS Calculations of capacitance reactance Calculation of inductive reactance Calculation involving RC,RL, LC circuits Calculation involving series and parallel RLC circuits | By the end of the lesson, students should be able to: * solve simple problems involving inductive arid capacitive reactance * solve simple problems involving RC,RL,LC and RLC circuit | Students in small groups solve simple problems involving inductive and capacitive reactance Students in pairs discusses the difference between purely reactive and purely resistive load circuit | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Chars the various circuits we RESOURCES https://diary-of-electric.blogsopt.com/2020/02/explanations-about-resistive-inductive-and-capacitive-loads.html |
| 5 | Advantages of negative Effect of a positive feedback on Amplifier bandwidth noise gain and distortion | By the end of the lesson, students should be able to: * explain the basic concepts of feedback in Amplifier * enumerate types of negative feedback and their characteristics | Students share themselves in two groups. Each group discuss the differences between the negative and positive feedback. They illustrate the types of feedback using circuit diagram. They also demonstrate the effect of positive feedback on an | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Radio Receiver set, Television receiver set, schematic diagram of a radio and television set |
RADIO, TELEVISION AND ELECTRONICS WORKS
| WKS | TOPICS | LEARNING OBJECTIVES | LEARNING ACTIVITIES | EMBEDDED CORE SKILLS | LEARNING RESOURCES |
| * explain the effects of positive feedback on Amplifier * state the advantages of negative feedback | Amplifier using a radio set. Students in small groups uses charts, flash cards or posters to give explanations on the basic concept of feedbacks in amplifier | WEB RESOURCES, https://www.tutonaispoint.com/ampliflers/amplifiers/feedback.htm |
| 6 | OSCILLATORS AND MULTIVIBRATOR Principle of Oscillators Hartley, Colpitt, Tuned Collector etc. Types of Multivibrator (IC 555), astable, bistable and monostable Construction of a typical Oscillator circuit | By the end of the lesson, students should be able to: * explain the principles, design arid application of simple oscillators and multi-vibrator * build a simple Oscillators and Multi-vibrator * explain the various types of Oscillator and their Application | Students as individuals gives examples where principle of oscillator and multi vibrators are applied Students as a class explain the principles, design and applications of simple oscillators and multi-vibrator. | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Schematic diagram Radio and Television Sets, Radio Set.Oscillator and Multivibrator components , Hand Tools, Cathode Ray Oscilloscope WEB RESOURCES https://www.4qdtec.com/mvibs.html |
| 7 | MID TERM BREAK | ||||
| 8 | TELEVISION TRANSMITTER Basic working principle of a Television transmitter Block diagram of a Television transmitter Stages of a Television Transmitter | By the end of the lesson, students should be able to: * explain the basic working principle of a Television Transmitter * draw the block diagram of a Television Transmitter | Students in small groups discuss the working principle of a Television transmitter in order to generate the information video and audio signals, modulate amplify and process the signal for transmission | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Charts showing the diagram of a Television WEB RESOURCES https://en.m.wikipedia.org/wiki/Television_transmitter |
| 9 | IMAGE PRODUCTION T.V RECEIVER Principle of scanning Video Signals | By the end of the lesson, students should be able to: describe how image is reproduced by the process of scanning in a Television receiver * explain the video signal path from the antenna to the picture tube or The display unit. | Students in pairs explains sequence of movement of the electron gun in the cathode ray tube (CRT) while the TV is working Students small groups explains how the video signals enter the antenna to the circuit and then the CRT | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Video Camera, Television Set Flow Chart/Sketch WEB RESOURCES https://www.cybercolege.com/typ008.htm |
| 10 | SOUND REPRODUCTION ON TELEVISION RECEIVER Principle of FM detector | By the end of the lesson, students should be able to: Describe how Sound signals are formed and path from the loud speaker | Students as a class use the block diagram available to describe how audio signals are recovered and reproduced | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Flow chart for audio signals recovering and reproduction WEB RESOURCES https://www.britanica.com/technology/television-receiver www.brandingmag.com www.resources.mojomedia.com www.smallbusiness.hron.com www.vegcropshotline.or |
| 11 | MONOCHROME TELEVISION RECEIVER Concept of Television Receiver Application of Television system Function and operation of Black and White Television receiver | By the end of the lesson, students should be able to: * examine the basic concept of Television Receiver * draw the block diagram of a monochrome television receiver * explain the function and operation of a monochrome Television | Student small groups discuss the basic system of television Receiver Student in pairs explain diagram drawn monochrome television receiver They also explain the operation of each stages of the monochrome television receiver staring from the antenna to the tube | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Flow chart of monochrome Television receiver, Panel showing the various stages of the TV receiver WEB.RESOURCES https://www.brankart.com/article/Monochrome-TV-receiver_3017/ |
| 12 | REVISION | ||||
| 13 | EXAMINATION |
Access Lagos State Free Radio,Television and Electronics Works Scheme of work SSS3. SS3 Electronics Works Curriculum for Secondary School –Schemeofwork
Radio, Television and Electronics Works Scheme of Work SSS3 Second Term
| WKS | TOPICS | LEARNING OBJECTIVES | LEARNING ACTIVITIES | EMBEDDED CORE SKILLS | LEARNING RESOURCES |
| 1 | WELC0ME TEST/ PRINCIPLE OF OPERATION OF COLOURED TELEV1S1ON RECEIVER | By the end of the lesson, students should be able to: * draw the block diagram of a coloured Television | Students as individuals write welcome test based on their firs term Students in pairs draw the block diagram of coloured Television receiver | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES chart, Flow chart, magnifying glass, Coloured TV circuit board. WEB RESOURCES https://www.uksafetystore.com/resources/safety-checklist/workshop |
| 2 | PRINCIPLE OF OPERATION OF BLACK AND WHITE TELEVISION function(s) of each stage of coloured revision receiver Processing of picture and sound signal at different (stages of a coloured TV receiver Principle of coloured signal, (transmission and reception. | By the end of the lesson, students should be able to: *state the function(s) of each stage of coloured Television receiver describe the processing of picture and sound signal at different stages Coloured TV receiver * state the primary colours explain The major tem and standards for colour transmission and reception * list the components of coloured signal Television system | Students in pair uses the flow chart to explain the function(s) of each stage of Coloured TV receiver. Students in small group uses the flow chart to discus the processing of picture and sound signal at different stageslaw | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL. RESOURCES Flow Chart, Magnifying glass Panel of Coloured Television receiver, tube base showing RG WEB RESOURCES |
| 3 | DIAGNOSIS AND REPAIR OF COLOURED TELEVISION RECEIVER Procedure for T.V repairs Use of service information (manual) arid circuit diagram Identification of symptom and repair of faults common to tuner, IF amplifier, video amplifier, CRT end synchronzing stages. Faults clearing instruments e.g. signal generator, coloured pattern generator etc. | By the end of the lesson, students should be able to: * state The procedure for TV * interpret service manuals and circuit diagrams * Identify the symptoms and clear faults common to tuner, if amplifiers, Video amplifiers, CRT and synchronzing stages. * corporate various electronic Instruments to dear faults in a TV set | Students in small groups check the symptoms of a TV set. They are then asked to diagnose and clear faults common td the tuner I.F and other stages in the TV set. Students in pairs demonstrate the removal, installation and adjustment of cathode ray tube (CRT) | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | 1. AUDIO VISUAL RESOURCES Colour Television receiver set R.E signal generator, Colour pattern generator, TV frequency sweep generator, Video analyzer, Picture tube analyzer and restorer, El-IT meter, Non-magnetic screwdriver, Demonstration board, Electronic repair tools WEB RESOIJRCES https://.www.techwalla.com/articles/what-causes-on-tvs |
| 4 | SYMPTOMS OF BASIC FAULTS OF A COLOURED TV RECEIVER Faults clearing at each stage of a coloured TV receiver Static and dynamic colour convergence comparison Colour bar generator and signal testing. | By the end of the lesson, students should be able to: * identify symptoms and faults common to each stage of a colour TV set. differentiate between static and dynamic colour convenience and operate the colour. | Students share themselves in two groups. Each group chooses a topic (static and dynamic colour convergence) and researches on it, Discussions are made at the end of the research. Students as individuals demonstrate the operation of colour bar generator to test signal. | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCES Colour bar generator, Colour, television receiver set, colour tv receiver Service manual circuit diagram, hand tools, instruments for repairs e.g. CRO, signal generator, pattern generator,multimetre etc. |
| WKS | TOPICS | LEARNING OBJECTIVES | LEARNING ACTIVITIES | EMBEDDED CORE SKILLS | LEARNING RESOURCES |
| WEB RESOURCES http://www.electronicword.co.ul/blog/6-signs-that-your-tv-needs-to-repaired | |||||
| 5 | BUSINESS MANAGEMENT Accounting practices Cost benefit analysis Purchasing method Accounting ledger Repair order form Inventory sheet finance Funding sources of capital Banks and unions | By the end of the lesson, students should be able to: * compare or balance credit against debt * enumerate purchasing method * fill business records | Students in small groups practices the basic concept of account balancing, meaning of credit and debit as applied in business management. They demonstrate how to fill business records appropriately | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO V1SUAL RESOURCES Charts and diagrams depicting accounting practice, Audio VISU2 equipment WEB RESOURCES https://www.upcourset.com/business-management-definiton#:-:text=Business%20management20%definition%20is%20managing%20the%20coordination%20and%20organisation%20of%20businessn%20of%20business%20activities..-This%20typically%20induces&text=Management%20is%20in%20charge%20ofthe%20objectives%20of%20the%20policy |
| 6 | CUSTOMER RELATIONS Daily appearance Customer psychology Working relations Telephone courtesy Business opportunities in Radio, TV and Electronic works | By the end of the lesson, students should be able to: * Appear neat and well groomed * apply courteous action to solve customers’ complaints * promote employers’ image * answer phone calls using appropriate answering techniques * explore business opportunities in Radio Television and electronic works * select business field for growth and advancement | Students as individuals are asked to practice needed components in answering phone call especially from new customer. They also demonstrate the use of courteous clear business like languages | • Problem Solving • Critical thinking • Personal development • Communication • Collaboration | AUDIO VISUAL RESOURCE Business field. WEB RESOURCES https://en.m.wiltipedia.org/wiki/Cusomer_relationship_managemen:-:text=Customer%20management20(CMR)%20isgest%2C%20current%20and%20potential%20customers |
| 7 | MID TERM BREAK | ||||
| 8 | REVISION | REVISION | REVISION | REVISION |
