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Physics
Form 4 2025
TERM III
School


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

Opening School

1 3
Energy, Work, Power And Machines
Kinetic energy Potential energy power
By the end of the lesson, the learner should be able to:


define power
explain the meaning of power potential and kinetic energies
distinguish between kinetic energy and potential energy

Discussion and the meanings of kinetic energy and potential energy
Defining power
Distinguishing between kinetic energy and potential energy

Object that can be lifted
Spring balance
Comprehensive secondary physics students book 3 pages 43-45
Comprehensive secondary physics teachers book 3 pages 18-22
Secondary physics KLB students book 3 page 126-132,134-136 
1 3-4
Energy, Work, Power And Machines
Kinetic energy Potential energy power
Simple machines
By the end of the lesson, the learner should be able to:


define power
explain the meaning of power potential and kinetic energies
distinguish between kinetic energy and potential energy


State and describe the efficiency of various machines

Discussion and the meanings of kinetic energy and potential energy
Defining power
Distinguishing between kinetic energy and potential energy

Discussion on efficiency of different machines
Experiments to illustrate efficiency of various machines
Problem solving

Object that can be lifted
Spring balance

Levers
Pulleys
Inclined planes
Strings
Masses
Comprehensive secondary physics students book 3 pages 43-45
Comprehensive secondary physics teachers book 3 pages 18-22
Secondary physics KLB students book 3 page 126-132,134-136 
Comprehensive secondary physics students book 3 pages 45-51
Comprehensive secondary physics teachers book 3 pages 18-22
Secondary physics KLB students book 3 page 137-159 
1 5
Energy, Work, Power And Machines
The law of conservation of energy
By the end of the lesson, the learner should be able to:


State the laws of conservation of energy
Explain the applications of the laws of conservations of energy

Discussion on the law of conservation of energy

Chart on the laws of conservation of energy
Comprehensive secondary physics students book 3 pages 41-42
Comprehensive secondary physics teachers book 3 pages 20-21
Secondary physics KLB students book 3 page 132-134 
2 1
Current Electricity
Ammeters and voltmeters
By the end of the lesson, the learner should be able to:


Measure potential difference and current in a circuit using the ammeters

Scale reading
Converting units of measurements
Discussing simple electric circuits

Ammeters
Voltmeters
Battery
Wires
Rheostat
Comprehensive secondary physics students book 3 pages 54-55
Comprehensive secondary physics teachers book 3 pages 24-28
Secondary physics KLB students book 3 page 164-168 
2 2
Current Electricity
Ammeters and voltmeters
By the end of the lesson, the learner should be able to:


Measure potential difference and current in a circuit using the ammeters

Scale reading
Converting units of measurements
Discussing simple electric circuits

Ammeters
Voltmeters
Battery
Wires
Rheostat
Comprehensive secondary physics students book 3 pages 54-55
Comprehensive secondary physics teachers book 3 pages 24-28
Secondary physics KLB students book 3 page 164-168 
2 3-4
Current Electricity
Voltage-current relationships
By the end of the lesson, the learner should be able to:


Define resistance and state its SI unit
Determine experientially the voltage current
Relationship for resistance in series and parallel

Defining resistance
Experiments to determine the relationship between voltage-current

Resistance wire
Rheostat
Battery
Voltmeter
Ammeter
Connecting wires
Comprehensive secondary physics students book 3 pages 57-59
Comprehensive secondary physics teachers book 3 pages 26-28
Secondary physics KLB students book 3 page 171-177 
2 5
Current Electricity
Effective resistance for registers in series and parallel
By the end of the lesson, the learner should be able to:


Derive effective resistance

Discussions on deriving the effective resistance
Deriving effective resistance of registers in parallel and series

Cells
Resistors
Ammeters
Voltmeters
wires
Comprehensive secondary physics students book 3 pages 60-66
Comprehensive secondary physics teachers book 3 pages 24-28
Secondary physics KLB students book 3 page 180-189
3

Mid Term Exams

4 1
Current Electricity
E.m.f and internal resistance (E=V+1r)
By the end of the lesson, the learner should be able to:


Determine e.m.f
Explain the internal resistance of a cell

Explanation on internal resistance
Demonstration on e.m.f and internal resistance
Discussion on e.m.f

Voltmeters
Ammeter
Cells
Connecting wires
Comprehensive secondary physics students book 3 pages 62-63
Comprehensive secondary physics teachers book 3 pages 24-28
Secondary physics KLB students book 3 page 190-195 
4 2
Current Electricity
E.m.f and internal resistance (E=V+1r)
By the end of the lesson, the learner should be able to:


Determine e.m.f
Explain the internal resistance of a cell

Explanation on internal resistance
Demonstration on e.m.f and internal resistance
Discussion on e.m.f

Voltmeters
Ammeter
Cells
Connecting wires
Comprehensive secondary physics students book 3 pages 62-63
Comprehensive secondary physics teachers book 3 pages 24-28
Secondary physics KLB students book 3 page 190-195 
4 3-4
Current Electricity
Electrostatics Ii
E.m.f and internal resistance (E=V+1r)
Capacitance
By the end of the lesson, the learner should be able to:


Determine e.m.f
Explain the internal resistance of a cell


Define capacitance and state its SI units
Describe the charging and discharging of a capacitor
State and explain the factors that affect the capacitance of a parallel plate capacitor

Explanation on internal resistance
Demonstration on e.m.f and internal resistance
Discussion on e.m.f

Experiments on charging and discharging capacitor
Discussion on factors affecting capacitance
Defining capacitance

Voltmeters
Ammeter
Cells
Connecting wires

Complete circuits
capacitors
Comprehensive secondary physics students book 3 pages 62-63
Comprehensive secondary physics teachers book 3 pages 24-28
Secondary physics KLB students book 3 page 190-195 
Comprehensive secondary physics students book 3 pages 80-82
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 230-237
4 5
Electrostatics Ii
Capacitance
By the end of the lesson, the learner should be able to:


Define capacitance and state its SI units
Describe the charging and discharging of a capacitor
State and explain the factors that affect the capacitance of a parallel plate capacitor

Experiments on charging and discharging capacitor
Discussion on factors affecting capacitance
Defining capacitance

Complete circuits
capacitors
Comprehensive secondary physics students book 3 pages 80-82
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 230-237
5 1
Electrostatics Ii
Combinations of capacitors
By the end of the lesson, the learner should be able to:


Derive the effective capacitance of capacitors in series and parallel

Deriving effective capacitance of capacitors in series and parallel
Solving problems
Discussion in the effective capacitance

Capacitors in series and parallel connections
Charts showing complete circuits
Comprehensive secondary physics students book 3 pages 80-82
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 237-241 
5 2
Electrostatics Ii
Energy stored in a charged capacitor
By the end of the lesson, the learner should be able to:


Describe the energy stored in a charged capacitor

Describing the energy stored in a charged capacitor

Capacitors
Dry cells
Charts on capacitors used
Comprehensive secondary physics students book 3 pages 82
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 244 
5 3-4
Quantity Of Heat
Heat capacity Specific heat capacity Units of heat capacity
By the end of the lesson, the learner should be able to:

By the end of the lesson the learner should be able to
Define heat capacity and specific heat capacity and derive their SI units

Experiments on heat capacity and specific heat capacity
Discussion on heat capacity and specific h eat capacity
Defining heat capacity and heat specific heat capacity

Source of heat
Water
Lagged can
Thermometer
Comprehensive secondary physics students book 3 pages 93-96
Comprehensive secondary physics teachers book 3 pages 42-46
Secondary physics KLB students book 3 page 246-260-271 
5 5
Quantity Of Heat
Change of state
By the end of the lesson, the learner should be able to:

By the end of the lesson the learner should be able to define and explain latent heat of fusion, specific latent heat of fusion
Define and explain latent heat of vaporization, specific latent heat of vaporization
State the SI units of latent heat of fusion and latent heat of vaporization

Experiments on latent heat of fusion and latent heat of vaporization
Discussion on latent heat of fusion and latent heat of vaporization

File
Water
Thermometer
Weighing balance
Source of heat
Comprehensive secondary physics students book 3 pages 96-97
Comprehensive secondary physics teachers book 3 pages 42-46
Secondary physics KLB students book 3 page 246-271-281 
6 1
Quantity Of Heat
Boiling and melting
By the end of the lesson, the learner should be able to:


Distinguish between boiling and melting
State the factors affecting melting points and boiling points of a substance
Describe the working of a pressure cooker and a refrigerator

Distinguishing between boiling and melting points
Stating factors affecting boiling and melting points
Experiments to illustrate boiling and melting point

Pressure cooker
Refrigerator
Charts on melting and boiling points
Ice
Heat
Sufuria
water
Comprehensive secondary physics students book 3 pages 97-101
Comprehensive secondary physics teachers book 3 pages 42-46
Secondary physics KLB students book 3 page 246-282-288 
6 2
The Gas Laws
Pressure law
By the end of the lesson, the learner should be able to:


State and verify the gas laws for an ideal gas experimentally

Experiments to verify pressure law
Demonstrations on pressure law
Discussion on pressure law

Water
Thermometer
Measuring cylinder
Syringe
Narrow glass tube
Comprehensive secondary physics students book 3 pages 103-104
Comprehensive secondary physics teachers book 3 pages 47-50
Secondary physics KLB students book 3 page 299-302
6 3-4
The Gas Laws
Pressure law
Charles?s law
By the end of the lesson, the learner should be able to:


State and verify the gas laws for an ideal gas experimentally


State and verify Charles?s law experimentally

Experiments to verify pressure law
Demonstrations on pressure law
Discussion on pressure law

Experiments to verify Charles?s law
Discussion on Charles?s law

Water
Thermometer
Measuring cylinder
Syringe
Narrow glass tube

Water
Thermometer
Measuring cylinder
Syringe
Narrow glass tube
Comprehensive secondary physics students book 3 pages 103-104
Comprehensive secondary physics teachers book 3 pages 47-50
Secondary physics KLB students book 3 page 299-302
Comprehensive secondary physics students book 3 pages 105-106
Comprehensive secondary physics teachers book 3 pages 47-50
Secondary physics KLB students book 3 page 295-298 
6 5
The Gas Laws
Boyle?s law
By the end of the lesson, the learner should be able to:


State and verify Boyle?s law experimentally

Experiments verifying and explain Boyle?s law
Discussion on Boyle?s law

Water
Thermometer
Syringe
Measuring cylinder
Narrow glass tube
Comprehensive secondary physics students book 3 pages 106-107
Comprehensive secondary physics teachers book 3 pages 47-50
Secondary physics KLB students book 3 page 290-294
7 1
The Gas Laws
The kinetic theory of gases
By the end of the lesson, the learner should be able to:


Convert Celsius scales to Kelvin scale of temperature and state basic assumptions of kinetic theory of gases

Discussion on basic assumptions of kinetic theory of gases
Conversion of Celsius to Kelvin scales

Graph paper
Clinical thermometer
Comprehensive secondary physics students book 3 pages 110-111
Comprehensive secondary physics teachers book 3 pages 50-51
Secondary physics KLB students book 3 page 107
7 2
Cathode Rays
The cathode rays of Oscilloscope
By the end of the lesson, the learner should be able to:


Explain the uses of a C.R.O

Describing the working of a T.V tube

T.V tube
Comprehensive secondary physics students book 4 pages 73-75
teachers book 4 pages 30-32
Secondary physics KLB students book 4 page 139 
7 3-4
X-Rays
Photo-Electric
Production of X-rays
Factors effecting photoelectric emissions
By the end of the lesson, the learner should be able to:


Explain the production of x-rays
State and explain the properties of X-rays
Distinguish between hard and soft x-rays


State the factors affecting photo-electric emission
Explain the factors affecting the photoelectric emissions

Demonstrations
Discussions
Calculations involving x-rays

Discussions
Demonstrations

X-ray tube
Charts
Comprehensive secondary physics students book 4 pages 80-84
teachers book 4 pages 35-36
Secondary physics KLB students book 4 page 144-148 
Comprehensive secondary physics students book 4 pages 88-90
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 156-158 
7 5
Photo-Electric
Plank?s constant
By the end of the lesson, the learner should be able to:

Define plank?s constant threshold frequency work function and photoelectric effect
Explain threshold frequency, work function and photoelectric effect

Discussions
Demonstration

charts
Comprehensive secondary physics students book 4 pages 90-91
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 153-156 79
8 1
Photo-Electric
The quantum theory of light
By the end of the lesson, the learner should be able to:


Determine the energy of p photos
Apply the equation E=hf to calculate the energy of photos
Explain photoelectric effect using Einstein?s equation=hf+1/2mv2

Discussions
Calculations

Chart on the use of Einstein?s equation
Comprehensive secondary physics students book 4 pages 90-92
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 153-156 0
8 2
Photo-Electric
The quantum theory of light
By the end of the lesson, the learner should be able to:


Determine the energy of p photos
Apply the equation E=hf to calculate the energy of photos
Explain photoelectric effect using Einstein?s equation=hf+1/2mv2

Discussions
Calculations

Chart on the use of Einstein?s equation
Comprehensive secondary physics students book 4 pages 90-92
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 153-156 0
8 3-4
Photo-Electric
The quantum theory of light
Application of photoelectric effect
By the end of the lesson, the learner should be able to:


Determine the energy of p photos
Apply the equation E=hf to calculate the energy of photos
Explain photoelectric effect using Einstein?s equation=hf+1/2mv2


Explain the working of a
Photo emissive cell
Photo conductive cell
Photo voltaic cell

Discussions
Calculations

Demonstrations
Discussions

Chart on the use of Einstein?s equation

Charts on the photo cell and how it works
Solar panels
Watch cells
Comprehensive secondary physics students book 4 pages 90-92
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 153-156 0
Comprehensive secondary physics students book 4 pages 92-93
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 160-163 
8 5
Electronics
Characteristics of p-n junction
By the end of the lesson, the learner should be able to:



sketch the current voltage characteristics for a diode


experiments

junction diode

Comprehensive secondary physics students book 4 pages 161-117
teachers book 4 pages 48-52
Secondary physics KLB students book 4 page 189-194 
9 1
Electronics
Applications of diodes
By the end of the lesson, the learner should be able to:


explain the application of diodes in rectifications

Discussions
Questions and answers

Chart showing the application of diode
Comprehensive secondary physics students book 4 pages 117-120
teachers book 4 pages 48-52
Secondary physics KLB students book 4 page 198-201 
9 2
Electronics
Applications of diodes
By the end of the lesson, the learner should be able to:


explain the application of diodes in rectifications

Discussions
Questions and answers

Chart showing the application of diode
Comprehensive secondary physics students book 4 pages 117-120
teachers book 4 pages 48-52
Secondary physics KLB students book 4 page 198-201 
9 3
Electronics
Applications of diodes
By the end of the lesson, the learner should be able to:


explain the application of diodes in rectifications

Discussions
Questions and answers

Chart showing the application of diode
Comprehensive secondary physics students book 4 pages 117-120
teachers book 4 pages 48-52
Secondary physics KLB students book 4 page 198-201 
9 1-4
Electronics
Applications of diodes
By the end of the lesson, the learner should be able to:


explain the application of diodes in rectifications

Discussions
Questions and answers

Chart showing the application of diode
Comprehensive secondary physics students book 4 pages 117-120
teachers book 4 pages 48-52
Secondary physics KLB students book 4 page 198-201 
9

Closing School


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