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SCHEME OF WORK
Physics
Form 3 2025
TERM III
School


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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1 1-2
Waves II
Properties of waves
By the end of the lesson, the learner should be able to:
Define wavelength, frequency, amplitude and wavefront
- Explain rectilinear propagation of waves
- Describe wave production in ripple tank
- Calculate wave speed using v=fλ
Q/A on wave basics from Form 2
- Demonstration of wave production using ripple tank
- Observation of rectilinear propagation
- Calculations on wave speed
Ripple tank, Straight vibrator, Water, Rulers, Stroboscope, Charts on wave properties
KLB Secondary Physics Form 3, Pages 156-158
1 3
Waves II
Reflection of waves
By the end of the lesson, the learner should be able to:
State laws of reflection for waves
- Describe experiments showing reflection
- Sketch reflected wave patterns
- Explain behavior at different reflectors
Review of reflection principles
- Experiment showing plane waves on straight reflector
- Observation of circular waves on concave and convex reflectors
- Drawing wavefront diagrams
Ripple tank, Plane wave generator, Curved and straight reflectors, Graph paper, Pencils
KLB Secondary Physics Form 3, Pages 158-161
1 4
Waves II
Refraction of waves
By the end of the lesson, the learner should be able to:
Describe refraction when waves change medium
- Explain change in wavelength and speed
- Demonstrate refraction using shallow and deep regions
- State that frequency remains constant
Q/A on refraction basics
- Experiment using glass plate to create shallow region
- Observation of wavefront spacing changes
- Discussion on speed and wavelength changes
Ripple tank, Glass plates, Water, Rulers for measurement, Frequency generator
KLB Secondary Physics Form 3, Pages 161-163
1 5
Waves II
Refraction of waves
By the end of the lesson, the learner should be able to:
Describe refraction when waves change medium
- Explain change in wavelength and speed
- Demonstrate refraction using shallow and deep regions
- State that frequency remains constant
Q/A on refraction basics
- Experiment using glass plate to create shallow region
- Observation of wavefront spacing changes
- Discussion on speed and wavelength changes
Ripple tank, Glass plates, Water, Rulers for measurement, Frequency generator
KLB Secondary Physics Form 3, Pages 161-163
2 1-2
Waves II
Diffraction of waves
Interference patterns
By the end of the lesson, the learner should be able to:
Define diffraction
- Explain factors affecting extent of diffraction
- Describe experiments showing diffraction
- Compare diffraction through different gap sizes
Define interference and superposition principle
- Explain constructive and destructive interference
- Describe formation of interference patterns
- Calculate path differences
Demonstration of diffraction using various gap sizes
- Observation of spreading effect
- Investigation of relationship between gap size and wavelength
- Practical measurements
Demonstration using two coherent sources
- Construction of interference patterns on paper
- Observation of nodal and antinodal lines
- Discussion on coherent sources
Ripple tank, Barriers with gaps, Various gap sizes, Measuring instruments, Wave generator
Two-point sources, Graph paper, Compass, Rulers, Ripple tank setup, Audio frequency generator
KLB Secondary Physics Form 3, Pages 163-165
KLB Secondary Physics Form 3, Pages 165-167
2 3
Waves II
Interference patterns
By the end of the lesson, the learner should be able to:
Define interference and superposition principle
- Explain constructive and destructive interference
- Describe formation of interference patterns
- Calculate path differences
Demonstration using two coherent sources
- Construction of interference patterns on paper
- Observation of nodal and antinodal lines
- Discussion on coherent sources
Two-point sources, Graph paper, Compass, Rulers, Ripple tank setup, Audio frequency generator
KLB Secondary Physics Form 3, Pages 165-167
2 4
Waves II
Constructive and destructive interference
By the end of the lesson, the learner should be able to:
Distinguish between constructive and destructive interference
- Explain conditions for each type
- Demonstrate using sound waves
- Calculate amplitudes in interference
Experiment with two loudspeakers
- Observation of loud and quiet regions
- Mathematical analysis of amplitude addition
- Problem solving on wave interference
Two loudspeakers, Audio generator, Microphone, Sound level meter, Connecting wires
KLB Secondary Physics Form 3, Pages 167-169
2 5
Waves II
Constructive and destructive interference
By the end of the lesson, the learner should be able to:
Distinguish between constructive and destructive interference
- Explain conditions for each type
- Demonstrate using sound waves
- Calculate amplitudes in interference
Experiment with two loudspeakers
- Observation of loud and quiet regions
- Mathematical analysis of amplitude addition
- Problem solving on wave interference
Two loudspeakers, Audio generator, Microphone, Sound level meter, Connecting wires
KLB Secondary Physics Form 3, Pages 167-169
3 1-2
Waves II
Stationary waves formation
Modes of vibration in strings
By the end of the lesson, the learner should be able to:
Define stationary waves
- Explain formation from two opposing waves
- Identify nodes and antinodes
- Calculate distances between nodes
Derive expressions for fundamental frequency
- Explain harmonics and overtones
- Calculate frequencies of overtones
- Demonstrate different modes
Demonstration using vibrating string
- Setup with tuning fork and pulley
- Observation of stationary wave patterns
- Measurements of wavelength
Discussion on fundamental and overtone frequencies
- Mathematical derivation of frequency formulas
- Practical demonstration of string vibrations
- Problem solving
Tuning fork, String, Pulley, Weights, Stroboscope, Measuring tape, Retort stands
Sonometer, Tuning forks, Weights, Measuring instruments, Calculator, Formula charts
KLB Secondary Physics Form 3, Pages 167-170
KLB Secondary Physics Form 3, Pages 170-172
3 3
Waves II
Modes of vibration in strings
By the end of the lesson, the learner should be able to:
Derive expressions for fundamental frequency
- Explain harmonics and overtones
- Calculate frequencies of overtones
- Demonstrate different modes
Discussion on fundamental and overtone frequencies
- Mathematical derivation of frequency formulas
- Practical demonstration of string vibrations
- Problem solving
Sonometer, Tuning forks, Weights, Measuring instruments, Calculator, Formula charts
KLB Secondary Physics Form 3, Pages 170-172
3 4
Waves II
Vibrating air columns - closed pipes
By the end of the lesson, the learner should be able to:
Explain stationary waves in closed pipes
- Derive fundamental frequency formula
- Calculate overtone frequencies
- Demonstrate resonance in pipes
Experiment with closed pipe resonance
- Observation of resonance positions
- Calculation of frequency relationships
- End correction discussions
Closed pipes of various lengths, Tuning forks, Water, Measuring cylinders, Resonance tubes
KLB Secondary Physics Form 3, Pages 172-174
3 5
Waves II
Vibrating air columns - closed pipes
By the end of the lesson, the learner should be able to:
Explain stationary waves in closed pipes
- Derive fundamental frequency formula
- Calculate overtone frequencies
- Demonstrate resonance in pipes
Experiment with closed pipe resonance
- Observation of resonance positions
- Calculation of frequency relationships
- End correction discussions
Closed pipes of various lengths, Tuning forks, Water, Measuring cylinders, Resonance tubes
KLB Secondary Physics Form 3, Pages 172-174
4 1-2
Waves II
Vibrating air columns - open pipes
By the end of the lesson, the learner should be able to:
Compare open and closed pipe resonance
- Derive frequency formulas for open pipes
- Explain harmonic series differences
- Solve numerical problems
Experiment with open pipe resonance
- Comparison with closed pipe results
- Mathematical problem solving
- Summary of all wave phenomena
Open pipes, Tuning forks, Sound level meters, Calculators, Summary charts, Past papers
KLB Secondary Physics Form 3, Pages 174-176
4 3
Waves II
Vibrating air columns - open pipes
By the end of the lesson, the learner should be able to:
Compare open and closed pipe resonance
- Derive frequency formulas for open pipes
- Explain harmonic series differences
- Solve numerical problems
Experiment with open pipe resonance
- Comparison with closed pipe results
- Mathematical problem solving
- Summary of all wave phenomena
Open pipes, Tuning forks, Sound level meters, Calculators, Summary charts, Past papers
KLB Secondary Physics Form 3, Pages 174-176
4 4
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
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
4 5
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
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 1-2
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
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 3
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
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 4
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
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
5 5
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
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 1-2
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
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
6 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
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
6 4
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
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
6 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
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 1-2
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
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
7 3
Gas Laws
Introduction to gas behavior and Boyle's Law
By the end of the lesson, the learner should be able to:
Describe relationship between pressure and volume of gases
- State Boyle's Law
- Demonstrate pressure-volume relationship using syringe
- Plot P vs V and P vs 1/V graphs
Q/A on gas properties from previous studies
- Demonstration using syringe to show pressure-volume relationship
- Discussion on molecular explanation
- Introduction to gas law investigations
Syringes, J-shaped tubes, Oil, Bourdon gauge, Foot pump, Metre rule, Graph paper
KLB Secondary Physics Form 3, Pages 235-237
7 4
Gas Laws
Introduction to gas behavior and Boyle's Law
By the end of the lesson, the learner should be able to:
Describe relationship between pressure and volume of gases
- State Boyle's Law
- Demonstrate pressure-volume relationship using syringe
- Plot P vs V and P vs 1/V graphs
Q/A on gas properties from previous studies
- Demonstration using syringe to show pressure-volume relationship
- Discussion on molecular explanation
- Introduction to gas law investigations
Syringes, J-shaped tubes, Oil, Bourdon gauge, Foot pump, Metre rule, Graph paper
KLB Secondary Physics Form 3, Pages 235-237
7 5
Gas Laws
Boyle's Law experiments and calculations
By the end of the lesson, the learner should be able to:
Perform experiment to verify Boyle's Law
- Record pressure and volume data
- Plot graphs of P vs V, P vs 1/V, and PV vs P
- Calculate pressure-volume products and verify constant relationship
Experiment using J-shaped tube with oil and pressure measurement
- Data collection and tabulation
- Graph plotting and analysis
- Verification of PV = constant relationship
Thick-walled J-shaped tube, Oil, Pressure gauge, Measuring instruments, Data tables, Graph paper, Calculators
KLB Secondary Physics Form 3, Pages 235-238
8 1-2
Gas Laws
Boyle's Law applications and kinetic theory explanation
By the end of the lesson, the learner should be able to:
Apply Boyle's Law to solve numerical problems
- Explain Boyle's Law using kinetic theory
- Analyze isothermal processes
- Solve problems involving gas bubbles and atmospheric pressure
Problem solving using P₁V₁ = P₂V₂
- Kinetic theory explanation of pressure-volume relationship
- Analysis of molecular collision frequency
- Real-world applications like diving and altitude effects
Problem worksheets, Kinetic theory diagrams, Calculator, Gas bubble scenarios, Atmospheric pressure data
KLB Secondary Physics Form 3, Pages 238-240
8 3
Gas Laws
Charles's Law
By the end of the lesson, the learner should be able to:
State Charles's Law for constant pressure processes
- Demonstrate volume-temperature relationship
- Perform experiments to verify V ∝ T relationship
- Plot V vs T and V vs θ graphs
Experiment using gas column in tube with varying temperature
- Temperature and volume measurements
- Graph plotting showing linear relationship
- Discussion on absolute zero concept
Gas tubes, Water baths, Thermometers, Measuring cylinders, Heating apparatus, Graph paper, Temperature control equipment
KLB Secondary Physics Form 3, Pages 238-241
8 4
Gas Laws
Charles's Law
By the end of the lesson, the learner should be able to:
State Charles's Law for constant pressure processes
- Demonstrate volume-temperature relationship
- Perform experiments to verify V ∝ T relationship
- Plot V vs T and V vs θ graphs
Experiment using gas column in tube with varying temperature
- Temperature and volume measurements
- Graph plotting showing linear relationship
- Discussion on absolute zero concept
Gas tubes, Water baths, Thermometers, Measuring cylinders, Heating apparatus, Graph paper, Temperature control equipment
KLB Secondary Physics Form 3, Pages 238-241
8 5
Gas Laws
Charles's Law applications and absolute temperature scale
By the end of the lesson, the learner should be able to:
Apply Charles's Law in numerical problems
- Convert between Celsius and Kelvin scales
- Explain concept of absolute zero
- Solve problems using V₁/T₁ = V₂/T₂
Problem solving with Charles's Law formula
- Temperature scale conversions
- Mathematical analysis of absolute zero
- Real-world applications in hot air balloons and gas heating
Temperature conversion charts, Problem sets, Calculators, Hot air balloon examples, Gas heating scenarios
KLB Secondary Physics Form 3, Pages 241-243
9 1-2
Gas Laws
Pressure Law (Gay-Lussac's Law)
By the end of the lesson, the learner should be able to:
State relationship between pressure and temperature at constant volume
- Demonstrate pressure-temperature experiments
- Verify P ∝ T relationship
- Derive pressure law formula
Experiment using constant volume gas with temperature variation
- Pressure measurements at different temperatures
- Graph plotting of P vs T
- Verification of linear relationship through origin
Constant volume gas apparatus, Pressure gauges, Temperature control, Water baths, Thermometers, Graph materials
KLB Secondary Physics Form 3, Pages 242-244
9 3
Gas Laws
Combined gas laws and ideal gas behavior
By the end of the lesson, the learner should be able to:
Combine all three gas laws into general gas equation
- Apply PV/T = constant for fixed mass of gas
- Solve complex problems involving multiple variables
- Explain ideal gas assumptions
Mathematical combination of gas laws
- Problem solving with changing P, V, and T
- Discussion on ideal gas concept
- Analysis of real gas deviations from ideal behavior
Combined law worksheets, Complex problem sets, Calculators, Ideal gas assumption charts
KLB Secondary Physics Form 3, Pages 243-245
9 4
Gas Laws
Combined gas laws and ideal gas behavior
By the end of the lesson, the learner should be able to:
Combine all three gas laws into general gas equation
- Apply PV/T = constant for fixed mass of gas
- Solve complex problems involving multiple variables
- Explain ideal gas assumptions
Mathematical combination of gas laws
- Problem solving with changing P, V, and T
- Discussion on ideal gas concept
- Analysis of real gas deviations from ideal behavior
Combined law worksheets, Complex problem sets, Calculators, Ideal gas assumption charts
KLB Secondary Physics Form 3, Pages 243-245
9 5
Gas Laws
Kinetic theory of gases
By the end of the lesson, the learner should be able to:
State basic assumptions of kinetic theory
- Explain gas laws using molecular motion
- Relate temperature to average kinetic energy
- Analyze molecular behavior in different conditions
Discussion of kinetic theory postulates
- Molecular explanation of gas laws
- Mathematical relationship between temperature and kinetic energy
- Analysis of molecular motion at different temperatures
Kinetic theory diagrams, Molecular motion animations, Temperature-energy relationship charts, Theoretical discussion materials
KLB Secondary Physics Form 3, Pages 244-245
10 1-2
Gas Laws
Absolute zero and temperature scales
By the end of the lesson, the learner should be able to:
Explain concept of absolute zero temperature
- Extrapolate gas law graphs to find absolute zero
- Convert between temperature scales
- Analyze relationship between Celsius and Kelvin scales
Graph extrapolation to determine absolute zero
- Mathematical analysis of temperature scale relationships
- Problem solving with temperature conversions
- Discussion on theoretical and practical aspects of absolute zero
Graph paper, Extrapolation exercises, Temperature scale diagrams, Conversion worksheets, Scientific calculators
KLB Secondary Physics Form 3, Pages 241-245
10 3
Gas Laws
Comprehensive applications and problem solving
By the end of the lesson, the learner should be able to:
Solve complex multi-step gas law problems
- Apply gas laws to real-world situations
- Analyze atmospheric and weather-related phenomena
- Review all gas law concepts and applications
Comprehensive problem solving session
- Analysis of weather balloons, scuba diving, and atmospheric pressure effects
- Review of all gas laws
- Preparation for examinations with complex scenarios
Past examination papers, Multi-step problem sets, Real-world scenario worksheets, Summary charts, Calculators
KLB Secondary Physics Form 3, Pages 235-245
10 4
Gas Laws
Comprehensive applications and problem solving
By the end of the lesson, the learner should be able to:
Solve complex multi-step gas law problems
- Apply gas laws to real-world situations
- Analyze atmospheric and weather-related phenomena
- Review all gas law concepts and applications
Comprehensive problem solving session
- Analysis of weather balloons, scuba diving, and atmospheric pressure effects
- Review of all gas laws
- Preparation for examinations with complex scenarios
Past examination papers, Multi-step problem sets, Real-world scenario worksheets, Summary charts, Calculators
KLB Secondary Physics Form 3, Pages 235-245
10 3-5
Gas Laws
Comprehensive applications and problem solving
By the end of the lesson, the learner should be able to:
Solve complex multi-step gas law problems
- Apply gas laws to real-world situations
- Analyze atmospheric and weather-related phenomena
- Review all gas law concepts and applications
Comprehensive problem solving session
- Analysis of weather balloons, scuba diving, and atmospheric pressure effects
- Review of all gas laws
- Preparation for examinations with complex scenarios
Past examination papers, Multi-step problem sets, Real-world scenario worksheets, Summary charts, Calculators
KLB Secondary Physics Form 3, Pages 235-245
11-12

END YEAR 2025 EXAMINATIONS


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