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SCHEME OF WORK
Physics
Form 3 2026
TERM III
School


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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

REOPENING

2 3
Heating Effect of Electric Current
Joule's law and electrical energy
By the end of the lesson, the learner should be able to:
State Joule's law of heating
- Derive H = I²Rt = VIt = V²t/R
- Calculate electrical energy and power
- Solve numerical problems on heating calculations
In groups, learners are guided to:
Discussion on Joule's heating law
- Mathematical derivations of heating formulas
- Problem solving on energy calculations
- Practical applications of heating law
Formula charts, Calculators, Problem worksheets, Electrical devices for analysis
KLB Secondary Physics Form 3, Pages 200-201
2 4
Heating Effect of Electric Current
Joule's law and electrical energy
By the end of the lesson, the learner should be able to:
State Joule's law of heating
- Derive H = I²Rt = VIt = V²t/R
- Calculate electrical energy and power
- Solve numerical problems on heating calculations
In groups, learners are guided to:
Discussion on Joule's heating law
- Mathematical derivations of heating formulas
- Problem solving on energy calculations
- Practical applications of heating law
Formula charts, Calculators, Problem worksheets, Electrical devices for analysis
KLB Secondary Physics Form 3, Pages 200-201
2 5
Heating Effect of Electric Current
Electrical power and energy calculations
By the end of the lesson, the learner should be able to:
Define electrical power P = VI = I²R = V²/R
- Calculate electrical energy W = Pt
- Convert between different units (J, kWh)
- Solve complex power problems
In groups, learners are guided to:
Derivation of electrical power formulas
- Energy unit conversions
- Problem solving on household appliances
- Cost calculations for electrical consumption
Calculators, Unit conversion charts, Household appliance ratings, Electricity bills, Problem sets
KLB Secondary Physics Form 3, Pages 201-202
3 1
Heating Effect of Electric Current
Applications - electrical lighting and heating devices
By the end of the lesson, the learner should be able to:
Describe working of filament lamp
- Explain choice of tungsten for filaments
- Describe working of electric iron, kettle and heaters
- Compare energy saving bulbs
In groups, learners are guided to:
Discussion on filament lamp construction
- Analysis of heating device designs
- Examination of actual heating appliances
- Efficiency comparisons
Filament lamps, Electric iron, Electric kettle, Heating elements, Energy saving bulbs, Appliance diagrams
KLB Secondary Physics Form 3, Pages 202-203
3 2
Heating Effect of Electric Current
Applications - electrical lighting and heating devices
By the end of the lesson, the learner should be able to:
Describe working of filament lamp
- Explain choice of tungsten for filaments
- Describe working of electric iron, kettle and heaters
- Compare energy saving bulbs
In groups, learners are guided to:
Discussion on filament lamp construction
- Analysis of heating device designs
- Examination of actual heating appliances
- Efficiency comparisons
Filament lamps, Electric iron, Electric kettle, Heating elements, Energy saving bulbs, Appliance diagrams
KLB Secondary Physics Form 3, Pages 202-203
3 3
Heating Effect of Electric Current
Applications - electrical lighting and heating devices
By the end of the lesson, the learner should be able to:
Describe working of filament lamp
- Explain choice of tungsten for filaments
- Describe working of electric iron, kettle and heaters
- Compare energy saving bulbs
In groups, learners are guided to:
Discussion on filament lamp construction
- Analysis of heating device designs
- Examination of actual heating appliances
- Efficiency comparisons
Filament lamps, Electric iron, Electric kettle, Heating elements, Energy saving bulbs, Appliance diagrams
KLB Secondary Physics Form 3, Pages 202-203
3 4
Heating Effect of Electric Current
Electrical safety - fuses and circuit protection
By the end of the lesson, the learner should be able to:
Explain working principle of fuses
- Calculate appropriate fuse ratings
- Describe safety measures in electrical installations
- Analyze circuit protection methods
In groups, learners are guided to:
Demonstration of fuse operation
- Calculation of fuse ratings for appliances
- Discussion on electrical safety
- Analysis of circuit protection devices
Various fuses, Fuse holders, Circuit diagrams, Safety equipment demonstrations, Rating calculations
KLB Secondary Physics Form 3, Pages 203-204
3 5
Heating Effect of Electric Current
Electrical safety - fuses and circuit protection
By the end of the lesson, the learner should be able to:
Explain working principle of fuses
- Calculate appropriate fuse ratings
- Describe safety measures in electrical installations
- Analyze circuit protection methods
In groups, learners are guided to:
Demonstration of fuse operation
- Calculation of fuse ratings for appliances
- Discussion on electrical safety
- Analysis of circuit protection devices
Various fuses, Fuse holders, Circuit diagrams, Safety equipment demonstrations, Rating calculations
KLB Secondary Physics Form 3, Pages 203-204
4 1
Heating Effect of Electric Current
Efficiency calculations and motor problems
By the end of the lesson, the learner should be able to:
Calculate efficiency of electrical devices
- Solve problems involving motors and mechanical work
- Analyze power input vs power output
- Calculate overall efficiency in systems
In groups, learners are guided to:
Problem solving on device efficiency
- Motor efficiency calculations
- Analysis of energy conversions
- Real-world efficiency problems
Motor specifications, Efficiency calculation worksheets, Power meters, Mechanical loading systems
KLB Secondary Physics Form 3, Pages 201-204
4 2
Heating Effect of Electric Current
Efficiency calculations and motor problems
By the end of the lesson, the learner should be able to:
Calculate efficiency of electrical devices
- Solve problems involving motors and mechanical work
- Analyze power input vs power output
- Calculate overall efficiency in systems
In groups, learners are guided to:
Problem solving on device efficiency
- Motor efficiency calculations
- Analysis of energy conversions
- Real-world efficiency problems
Motor specifications, Efficiency calculation worksheets, Power meters, Mechanical loading systems
KLB Secondary Physics Form 3, Pages 201-204
4 3
Heating Effect of Electric Current
Series and parallel heating circuits
By the end of the lesson, the learner should be able to:
Analyze heating in series and parallel circuits
- Calculate power dissipation in different configurations
- Compare heating effects in different circuit arrangements
- Solve complex circuit problems
In groups, learners are guided to:
Circuit analysis of heating effects
- Comparison of series vs parallel heating
- Power distribution calculations
- Complex circuit problem solving
Resistors in circuits, Ammeters, Voltmeters, Power calculation sheets, Circuit boards
KLB Secondary Physics Form 3, Pages 200-204
4 4
Heating Effect of Electric Current
Series and parallel heating circuits
By the end of the lesson, the learner should be able to:
Analyze heating in series and parallel circuits
- Calculate power dissipation in different configurations
- Compare heating effects in different circuit arrangements
- Solve complex circuit problems
In groups, learners are guided to:
Circuit analysis of heating effects
- Comparison of series vs parallel heating
- Power distribution calculations
- Complex circuit problem solving
Resistors in circuits, Ammeters, Voltmeters, Power calculation sheets, Circuit boards
KLB Secondary Physics Form 3, Pages 200-204
4 5
Quantity of Heat
Heat capacity and specific heat capacity
By the end of the lesson, the learner should be able to:
Define heat capacity and specific heat capacity
- State SI units for both quantities
- Distinguish between heat capacity and specific heat capacity
- Use formula Q = mcθ in simple calculations
In groups, learners are guided to:
Q/A on heat concepts from previous studies
- Discussion on definitions and units
- Comparison of heat capacity vs specific heat capacity
- Simple problem solving using Q = mcθ formula
Charts on heat definitions, Calculators, Simple problem worksheets, Various materials for comparison
KLB Secondary Physics Form 3, Pages 206-209
5 1
Quantity of Heat
Determination of specific heat capacity - method of mixtures for solids
By the end of the lesson, the learner should be able to:
Describe method of mixtures for solids
- Perform experiment to determine specific heat capacity of metal
- Apply heat balance principle
- Calculate specific heat capacity from experimental data
In groups, learners are guided to:
Experiment using hot metal block in cold water
- Measurement of temperatures and masses
- Application of heat balance equation
- Calculation of specific heat capacity from results
Metal blocks, Beakers, Water, Thermometers, Weighing balance, Heat source, Well-lagged calorimeter, Stirrer
KLB Secondary Physics Form 3, Pages 209-212
5 2
Quantity of Heat
Determination of specific heat capacity - method of mixtures for solids
By the end of the lesson, the learner should be able to:
Describe method of mixtures for solids
- Perform experiment to determine specific heat capacity of metal
- Apply heat balance principle
- Calculate specific heat capacity from experimental data
In groups, learners are guided to:
Experiment using hot metal block in cold water
- Measurement of temperatures and masses
- Application of heat balance equation
- Calculation of specific heat capacity from results
Metal blocks, Beakers, Water, Thermometers, Weighing balance, Heat source, Well-lagged calorimeter, Stirrer
KLB Secondary Physics Form 3, Pages 209-212
5 3
Quantity of Heat
Determination of specific heat capacity - method of mixtures for solids
By the end of the lesson, the learner should be able to:
Describe method of mixtures for solids
- Perform experiment to determine specific heat capacity of metal
- Apply heat balance principle
- Calculate specific heat capacity from experimental data
In groups, learners are guided to:
Experiment using hot metal block in cold water
- Measurement of temperatures and masses
- Application of heat balance equation
- Calculation of specific heat capacity from results
Metal blocks, Beakers, Water, Thermometers, Weighing balance, Heat source, Well-lagged calorimeter, Stirrer
KLB Secondary Physics Form 3, Pages 209-212
5 4
Quantity of Heat
Determination of specific heat capacity - electrical method
By the end of the lesson, the learner should be able to:
Describe electrical method for solids
- Perform electrical heating experiment
- Calculate electrical energy supplied
- Determine specific heat capacity using electrical method
In groups, learners are guided to:
Experiment using electrical heating of metal block
- Measurement of voltage, current and time
- Calculation of electrical energy supplied
- Determination of specific heat capacity
Metal cylinder with heater, Voltmeter, Ammeter, Thermometer, Stopwatch, Insulating materials, Power supply
KLB Secondary Physics Form 3, Pages 212-214
5 5
Quantity of Heat
Determination of specific heat capacity - electrical method
By the end of the lesson, the learner should be able to:
Describe electrical method for solids
- Perform electrical heating experiment
- Calculate electrical energy supplied
- Determine specific heat capacity using electrical method
In groups, learners are guided to:
Experiment using electrical heating of metal block
- Measurement of voltage, current and time
- Calculation of electrical energy supplied
- Determination of specific heat capacity
Metal cylinder with heater, Voltmeter, Ammeter, Thermometer, Stopwatch, Insulating materials, Power supply
KLB Secondary Physics Form 3, Pages 212-214
6 1
Quantity of Heat
Specific heat capacity of liquids and continuous flow method
By the end of the lesson, the learner should be able to:
Determine specific heat capacity of water by electrical method
- Describe continuous flow method
- Explain advantages of continuous flow method
- Solve problems on specific heat capacity
In groups, learners are guided to:
Electrical method experiment for water
- Discussion on continuous flow apparatus
- Analysis of method advantages
- Problem solving on specific heat calculations
Calorimeter, Electrical heater, Water, Measuring instruments, Continuous flow apparatus diagram, Problem sets
KLB Secondary Physics Form 3, Pages 214-217
6 2
Quantity of Heat
Specific heat capacity of liquids and continuous flow method
By the end of the lesson, the learner should be able to:
Determine specific heat capacity of water by electrical method
- Describe continuous flow method
- Explain advantages of continuous flow method
- Solve problems on specific heat capacity
In groups, learners are guided to:
Electrical method experiment for water
- Discussion on continuous flow apparatus
- Analysis of method advantages
- Problem solving on specific heat calculations
Calorimeter, Electrical heater, Water, Measuring instruments, Continuous flow apparatus diagram, Problem sets
KLB Secondary Physics Form 3, Pages 214-217
6 3
Quantity of Heat
Change of state and latent heat concepts
By the end of the lesson, the learner should be able to:
Define latent heat of fusion and vaporization
- Explain change of state process
- Plot cooling curve for naphthalene
- Identify melting and boiling points from graphs
In groups, learners are guided to:
Experiment plotting cooling curve for naphthalene
- Observation of temperature plateaus during phase changes
- Discussion on latent heat concept
- Graph analysis and interpretation
Naphthalene, Test tubes, Thermometer, Stopwatch, Graph paper, Heat source, Cooling apparatus
KLB Secondary Physics Form 3, Pages 218-220
6 4
Quantity of Heat
Change of state and latent heat concepts
By the end of the lesson, the learner should be able to:
Define latent heat of fusion and vaporization
- Explain change of state process
- Plot cooling curve for naphthalene
- Identify melting and boiling points from graphs
In groups, learners are guided to:
Experiment plotting cooling curve for naphthalene
- Observation of temperature plateaus during phase changes
- Discussion on latent heat concept
- Graph analysis and interpretation
Naphthalene, Test tubes, Thermometer, Stopwatch, Graph paper, Heat source, Cooling apparatus
KLB Secondary Physics Form 3, Pages 218-220
6 5
Quantity of Heat
Specific latent heat of fusion
By the end of the lesson, the learner should be able to:
Define specific latent heat of fusion
- Determine latent heat of ice by method of mixtures
- Perform electrical method for latent heat
- Calculate latent heat from experimental data
In groups, learners are guided to:
Method of mixtures experiment using ice and warm water
- Electrical method using ice and immersion heater
- Heat balance calculations
- Determination of specific latent heat values
Ice, Calorimeter, Thermometer, Electrical heater, Filter funnels, Beakers, Measuring cylinders
KLB Secondary Physics Form 3, Pages 220-223
7 1
Quantity of Heat
Specific latent heat of vaporization
By the end of the lesson, the learner should be able to:
Define specific latent heat of vaporization
- Determine latent heat of steam by condensation method
- Perform electrical method for vaporization
- Solve complex latent heat problems
In groups, learners are guided to:
Steam condensation experiment in calorimeter
- Electrical method using boiling water
- Calculation of latent heat of vaporization
- Complex problem solving involving phase changes
Steam generator, Condenser, Calorimeter, Electrical heater, Measuring instruments, Safety equipment
KLB Secondary Physics Form 3, Pages 223-227
7 2
Quantity of Heat
Specific latent heat of vaporization
By the end of the lesson, the learner should be able to:
Define specific latent heat of vaporization
- Determine latent heat of steam by condensation method
- Perform electrical method for vaporization
- Solve complex latent heat problems
In groups, learners are guided to:
Steam condensation experiment in calorimeter
- Electrical method using boiling water
- Calculation of latent heat of vaporization
- Complex problem solving involving phase changes
Steam generator, Condenser, Calorimeter, Electrical heater, Measuring instruments, Safety equipment
KLB Secondary Physics Form 3, Pages 223-227
7 3
Quantity of Heat
Specific latent heat of vaporization
By the end of the lesson, the learner should be able to:
Define specific latent heat of vaporization
- Determine latent heat of steam by condensation method
- Perform electrical method for vaporization
- Solve complex latent heat problems
In groups, learners are guided to:
Steam condensation experiment in calorimeter
- Electrical method using boiling water
- Calculation of latent heat of vaporization
- Complex problem solving involving phase changes
Steam generator, Condenser, Calorimeter, Electrical heater, Measuring instruments, Safety equipment
KLB Secondary Physics Form 3, Pages 223-227
7 4
Quantity of Heat
Effects of pressure and impurities on melting and boiling points
By the end of the lesson, the learner should be able to:
Investigate effect of pressure on melting point of ice
- Demonstrate regelation phenomenon
- Investigate effect of pressure on boiling point
- Explain effect of impurities on phase transition temperatures
In groups, learners are guided to:
Regelation experiment with ice and wire
- Pressure effect on boiling point using flask
- Salt solution boiling point investigation
- Discussion on pressure cooker working
Ice blocks, Weighted wire, Round-bottomed flask, Thermometer, Salt solutions, Pressure cooker model
KLB Secondary Physics Form 3, Pages 227-230
7 5
Quantity of Heat
Effects of pressure and impurities on melting and boiling points
By the end of the lesson, the learner should be able to:
Investigate effect of pressure on melting point of ice
- Demonstrate regelation phenomenon
- Investigate effect of pressure on boiling point
- Explain effect of impurities on phase transition temperatures
In groups, learners are guided to:
Regelation experiment with ice and wire
- Pressure effect on boiling point using flask
- Salt solution boiling point investigation
- Discussion on pressure cooker working
Ice blocks, Weighted wire, Round-bottomed flask, Thermometer, Salt solutions, Pressure cooker model
KLB Secondary Physics Form 3, Pages 227-230
8 1
Quantity of Heat
Evaporation and cooling effects
By the end of the lesson, the learner should be able to:
Define evaporation and distinguish from boiling
- Investigate factors affecting evaporation rate
- Demonstrate cooling effect of evaporation
- Explain applications of evaporation cooling
In groups, learners are guided to:
Experiments on evaporation rate factors
- Demonstration of cooling by evaporation using ether
- Investigation of surface area, temperature and humidity effects
- Discussion on natural cooling systems
Various liquids, Beakers, Fans, Thermometers, Ether, Test tubes, Humidity measuring devices
KLB Secondary Physics Form 3, Pages 230-233
8 2
Quantity of Heat
Evaporation and cooling effects
By the end of the lesson, the learner should be able to:
Define evaporation and distinguish from boiling
- Investigate factors affecting evaporation rate
- Demonstrate cooling effect of evaporation
- Explain applications of evaporation cooling
In groups, learners are guided to:
Experiments on evaporation rate factors
- Demonstration of cooling by evaporation using ether
- Investigation of surface area, temperature and humidity effects
- Discussion on natural cooling systems
Various liquids, Beakers, Fans, Thermometers, Ether, Test tubes, Humidity measuring devices
KLB Secondary Physics Form 3, Pages 230-233
9

EXAMS AND CLOSING


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