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Physics
Form 4 2025
TERM I
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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
Diffraction, refraction and interference of waves
By the end of the lesson, the learner should be able to:


State and explain the properties of waves experimentally
Sketch wave fronts to illustrate the reflections


Sketch various wave fonts to illustrate their diffraction, refraction and interference

Stating and explaining the properties of waves
Sketching wave fronts illustrate reflection

Sketching various wave fonts
Experiments to illustrate refraction, diffraction and interference

Rope/wire
Various reflections

Water
Basin
Ripple
Tank
Comprehensive secondary physics students book 3 pages 67-69
Comprehensive secondary physics teachers book 3 pages 29-32
Secondary physics KLB students book 3 page 198-203
Comprehensive secondary physics students book 3 pages 70-73
Comprehensive secondary physics teachers book 3 pages 29-32
Secondary physics KLB students book 3 page 203-212 
1 3
Waves II
Diffraction, refraction and interference of waves
By the end of the lesson, the learner should be able to:


Sketch various wave fonts to illustrate their diffraction, refraction and interference

Sketching various wave fonts
Experiments to illustrate refraction, diffraction and interference

Water
Basin
Ripple
Tank
Comprehensive secondary physics students book 3 pages 70-73
Comprehensive secondary physics teachers book 3 pages 29-32
Secondary physics KLB students book 3 page 203-212 
1 4
Waves II
Constructive and distractive waves
By the end of the lesson, the learner should be able to:


Explain constructive and destructive interference

Discussion on constructive and destructive interference
Experiments constructive and destructive interference

Ripple tank
Rope/wire
Comprehensive secondary physics students book 3 pages 73-74
Comprehensive secondary physics teachers book 3 pages 29-32
Secondary physics KLB students book 3 page 203-212 
1 5
Waves II
Constructive and distractive waves
By the end of the lesson, the learner should be able to:


Explain constructive and destructive interference

Discussion on constructive and destructive interference
Experiments constructive and destructive interference

Ripple tank
Rope/wire
Comprehensive secondary physics students book 3 pages 73-74
Comprehensive secondary physics teachers book 3 pages 29-32
Secondary physics KLB students book 3 page 203-212 
2 1-2
Waves II
Stationary waves
By the end of the lesson, the learner should be able to:


Describe experiments to illustrate stationary waves

Demonstration and explaining of stationery waves

Wires under tension
Comprehensive secondary physics students book 3 pages 74
Comprehensive secondary physics teachers book 3 pages 29-32
Secondary physics KLB students book 3 page 212-215 
2 3
Waves II
Vibrating air columns
By the end of the lesson, the learner should be able to:


Describe and explain closed pipe and open pipe

Describing vibrations in close and open pipes

Open and closed pipes
Comprehensive secondary physics students book 3 pages 74
Comprehensive secondary physics teachers book 3 pages 29-32
Secondary physics KLB students book 3 page 218-220 
2 4
Waves II
Vibrating air columns
By the end of the lesson, the learner should be able to:


Describe and explain closed pipe and open pipe

Describing vibrations in close and open pipes

Open and closed pipes
Comprehensive secondary physics students book 3 pages 74
Comprehensive secondary physics teachers book 3 pages 29-32
Secondary physics KLB students book 3 page 218-220 
2 5
Electrostatics Ii
Electric field patterns
By the end of the lesson, the learner should be able to:


Sketch electric field patterns around charged bodies

Discussion on electric field patterns
Observing and plotting field patterns

Charts on magnetic fields
Comprehensive secondary physics students book 3 pages 76-77
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 222-225
P
3 1-2
Electrostatics Ii
Charge distribution on conductors
By the end of the lesson, the learner should be able to:


Describe charge distribution on conductors:
Spherical and pear shaped conductors

Discussions on charge distribution on conductors
Experiment is demonstrated/illustrate charge distribution on conductors

Vande Graaf generator
Chart showing charge distribution on different conductors
Gold leaf electroscope
Comprehensive secondary physics students book 3 pages 77-78
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 225-228 
3 3
Electrostatics Ii
Charge distribution on conductors
By the end of the lesson, the learner should be able to:


Describe charge distribution on conductors:
Spherical and pear shaped conductors

Discussions on charge distribution on conductors
Experiment is demonstrated/illustrate charge distribution on conductors

Vande Graaf generator
Chart showing charge distribution on different conductors
Gold leaf electroscope
Comprehensive secondary physics students book 3 pages 77-78
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 225-228 
3 4
Electrostatics Ii
Lighting arrestor
By the end of the lesson, the learner should be able to:


Explain how lightning arrestor works

Discussions on the lighting arrestor
Explanations on the lighting arrestor

Improvised lighting arrestor
Photographs of lightning arrestor
Comprehensive secondary physics students book 3 pages 79-80
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 229-230 
3 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
4 1-2
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 
4 3
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 
4 4
Electrostatics
Application of capacitors
By the end of the lesson, the learner should be able to:


State and explain the applications of capacitors

Discussions on applications of capacitors
Stating and explaining applications of capacitors

Charts on the use of capacitors
capacitors
Comprehensive secondary physics students book 3 pages 82-84
Comprehensive secondary physics teachers book 3 pages 34-39
Secondary physics KLB students book 3 page 244 
4 5
The Heating Effect Of Electric Current
Electric current heating effect
By the end of the lesson, the learner should be able to:


Perform and describe experiments to illustrate the heating effect of electric current

Experiments to illustrate heating effect of electric current
Discussions on heating effect of electric current

Complete circuit
Water in a beaker
Metallic rod
Thermometer
Comprehensive secondary physics students book 3 pages 88
Comprehensive secondary physics teachers book 3 pages 39-41
Secondary physics KLB students book 3 page 246-247 
5 1-2
The Heating Effect Of Electric Current
Heating devices fuses
By the end of the lesson, the learner should be able to:


describe the working of electric iron, bulb filament and an electric water

discussion on electric devices
observations and experiments on heating devices

electric irons
electric bulb
electric kettle
electric heater
fuses
Comprehensive secondary physics students book 3 pages 90-91
Comprehensive secondary physics teachers book 3 pages 39-41
Secondary physics KLB students book 3 page 255-258
5 3
The Heating Effect Of An Electric Current
Factors affecting electric current
By the end of the lesson, the learner should be able to:


State and explain the factors affecting electrical energy

Discussions on the factors affecting electrical energy
Experiments on electrical energy
Stating and explaining factors affecting the electrical energy

Complete circuit
Wires
Rheostat
Ammeter
battery
Comprehensive secondary physics students book 3 pages 88-90
Comprehensive secondary physics teachers book 3 pages 39-41
Secondary physics KLB students book 3 page 247-255 
5 4
The Heating Effect Of An Electric Current
Factors affecting electric current
By the end of the lesson, the learner should be able to:


State and explain the factors affecting electrical energy

Discussions on the factors affecting electrical energy
Experiments on electrical energy
Stating and explaining factors affecting the electrical energy

Complete circuit
Wires
Rheostat
Ammeter
battery
Comprehensive secondary physics students book 3 pages 88-90
Comprehensive secondary physics teachers book 3 pages 39-41
Secondary physics KLB students book 3 page 247-255 
5 5
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 
6 1-2
Quantity Of Heat
Change of state
Boiling and melting
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


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

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

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

File
Water
Thermometer
Weighing balance
Source of heat

Pressure cooker
Refrigerator
Charts on melting and boiling points
Ice
Heat
Sufuria
water
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 
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 3
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 4
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 5
The Gas Laws
Charles?s law
By the end of the lesson, the learner should be able to:


State and verify Charles?s law experimentally

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

Water
Thermometer
Measuring cylinder
Syringe
Narrow glass tube
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 
7

Mid term

8 1-2
The Gas Laws
The Gas Law?s
Boyle?s law
The kinetic theory of gases
By the end of the lesson, the learner should be able to:
State and verify Boyle?s law experimentally
Convert Celsius scales to Kelvin scale of temperature and state basic assumptions of kinetic theory of gases


Explain law absolute zero temperature may be obtained from pressure and temp. graphs
Experiments verifying and explain Boyle?s law
Discussion on Boyle?s law
Discussion on basic assumptions of kinetic theory of gases
Conversion of Celsius to Kelvin scales

Discussions on the absolute zero temperature from pressure using kinetic theory of gases
Water
Thermometer
Syringe
Measuring cylinder
Narrow glass tube
Graph paper
Clinical thermometer

Graph paper
Clinical thermometer
Working out sums
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
Comprehensive secondary physics students book 3 pages 108-110
Comprehensive secondary physics teachers book 3 pages 47-50
Secondary physics KLB students book 3 page 303 
8 3
Lenses
Conveying and diverging lenses
By the end of the lesson, the learner should be able to:

By the end of the lesson the learner should be able to
Describe converging lenses
Describe diverging lenses

Using light beams to distinguish between diverging and converging lenses

Diverging lenses
Converging lenses
Source of light beam
screen
Comprehensive secondary physics students book 4 pages 1-2
teachers book 3 pages 1-5
Secondary physics KLB students book 4 page 1
8 4
Lenses
Parts of fair lenses
By the end of the lesson, the learner should be able to:


Describe the principal focus using ray diagram
Describe the optical center using ray diagram
Describe the focal length of thin lenses using ray diagram

Description of principal focus, optical centre and focal length of a thin lens

Chart showing the parts of thin lens
Graph paper
Diverging lens
Converging lens
Comprehensive secondary physics students book 4 pages 1-3
teachers book 3 pages 1-5
Secondary physics KLB students book 4 page 6-7 
8 5
Lenses
Parts of fair lenses
By the end of the lesson, the learner should be able to:


Describe the principal focus using ray diagram
Describe the optical center using ray diagram
Describe the focal length of thin lenses using ray diagram

Description of principal focus, optical centre and focal length of a thin lens

Chart showing the parts of thin lens
Graph paper
Diverging lens
Converging lens
Comprehensive secondary physics students book 4 pages 1-3
teachers book 3 pages 1-5
Secondary physics KLB students book 4 page 6-7 
9 1-2
Lenses
Focal length
Images in fair lenses
By the end of the lesson, the learner should be able to:


Determine experimentally the focal length of a converging lens
Determine the focal length of a converging lens using estimation method


Construct the principal rays for converging lens
Construct the principal rays for diverging lenses

Experiment to determine the focal length of a fair lens

Constructing the principal rays for diverging lenses
Constructing the principal rays for converging lenses

Converging lenses
Screen
Pins
candle

Converging lenses
Diverging lenses
Graph papers
Ruler
Comprehensive secondary physics students book 4 pages 2-3
teachers book 3 pages 1-5
Secondary physics KLB students book 4 page 17-20 
Comprehensive secondary physics students book 4 pages 3-6
teachers book 3 pages 1-5
Secondary physics KLB students book 4 page 7-12 
9 3
Lenses
Images in converging lenses
By the end of the lesson, the learner should be able to:


Locate imaged formed by converging lenses using ray construction method
Describe the images formed in converging lenses

Describing the characteristics of images formed in converging lenses

Graph paper
Geometrical set
Converging lenses
screen
Comprehensive secondary physics students book 4 pages 5-6
teachers book 3 pages 1-5
Secondary physics KLB students book 4 page 7-10 
9 4
Lenses
Images in diverging lenses
By the end of the lesson, the learner should be able to:


Locate imaged formed by diverging lenses using ray construction method
Describe the images formed in diverging lenses

Describe the characteristics of the formed in diverging lenses
Graph paper
Geometrical set
Diverging lenses
Screen
Comprehensive secondary physics students book 4 pages 5
teachers book 3 pages 1-5
Secondary physics KLB students book 4 page 11 
9 5
Lenses
The microscope
By the end of the lesson, the learner should be able to:


Explain the working of a simple microscope
Explain the working of a compound microscope

Drawing and labeling the parts of a microscope
Describing the work of a microscope

Simple microscope
Compound microscope
Magnifying lens
Comprehensive secondary physics students book 4 pages 10-11
teachers book 4 pages 1-5 
10 1-2
Lenses
The telescope
By the end of the lesson, the learner should be able to:


Describe the structure of a telescope
Describe the working of a telescope

Drawing and labeling the parts of a telescope
Describing how a telescope works

Telescope
Lenses
Manilla paper
Comprehensive secondary physics students book 4 pages 11
teachers book 4 pages 1-5
10 3
Lenses
The camera
By the end of the lesson, the learner should be able to:


Describe the parts of a camera
Explain the working of a camera
Explain the use of lenses in a camera

Describing the parts of a camera
Explaining the use of lenses in a camera

Camera
Charts showing the parts of a camera
Comprehensive secondary physics students book 4 pages 11-12
teachers book 4 pages 1-5
Secondary physics KLB students book 4 page 33 
10 4
Lenses
Image formation in the human eye
By the end of the lesson, the learner should be able to:


Describe the parts of a human eye
Explain the function of each part of the human eye

Describing the parts of the human eye
Explaining the function of each part of the human eye

Chart showing the parts of human eye
Model of the human eye
Comprehensive secondary physics students book 4 pages 12-13
teachers book 34pages 1-5
Secondary physics KLB students book 4 page 29-31
10 5
Lenses
Working of the human eye
By the end of the lesson, the learner should be able to:


Explain the image formation in the human eye

Explaining the image formation in the eye

Chart showing the image formation in the human eye
Comprehensive secondary physics students book 4 pages 13-14
teachers book 34pages 1-5
Secondary physics KLB students book 4 page 29-31
11 1
Lenses
Defects of vision
By the end of the lesson, the learner should be able to:


Describe the defects of the human eye
Explain the corrections of human eye defects

Describing the defects of the human eye
Explaining the eye defects are corrected

Charts showing eye defects and how they are corrected
Comprehensive secondary physics students book 4 pages 13-14
teachers book 34pages 1-5
Secondary physics KLB students book 4 page 31-32
11 1-2
Lenses
Uniform Circular Motion
Defects of vision
Circular motion
By the end of the lesson, the learner should be able to:


Describe the defects of the human eye
Explain the corrections of human eye defects


Define circular motion

Describing the defects of the human eye
Explaining the eye defects are corrected

Observing and running a hoop
Rotate a stone tied to the end of a rope

Charts showing eye defects and how they are corrected

Hoop
String/rope
store
Comprehensive secondary physics students book 4 pages 13-14
teachers book 34pages 1-5
Secondary physics KLB students book 4 page 31-32
Comprehensive secondary physics students book 4 pages 18
teachers book 34pages 10-12
Secondary physics KLB students book 4 page 37-4
11 3
Uniform Circular Motion
Radiant, angular displacement and angular velocity
By the end of the lesson, the learner should be able to:


Define the radiant measure
Define the angular displacement and velocity
Explain the angular displacement and velocity

Discussions
Experiment

Illustration of angular displacement and angular velocity on a chart
Comprehensive secondary physics students book 4 pages 18-20
teachers book 34pages 10-12
Secondary physics KLB students book 4 page 37-42
Golden tips Physics pages 34-35
11 4
Uniform Circular Motion
Radiant, angular displacement and angular velocity
By the end of the lesson, the learner should be able to:


Define the radiant measure
Define the angular displacement and velocity
Explain the angular displacement and velocity

Discussions
Experiment

Illustration of angular displacement and angular velocity on a chart
Comprehensive secondary physics students book 4 pages 18-20
teachers book 34pages 10-12
Secondary physics KLB students book 4 page 37-42
Golden tips Physics pages 34-35
11 5
Uniform Circular Motion
Centripetal force
By the end of the lesson, the learner should be able to:


Describe simple experiment on centripetal force
Illustrate centripetal force
Determine the magnitude of centripetal force experimentally

Experiments
Discussions
observations

Pendulum
String
Stone
Round table
Ball/bob
Stop clock
Comprehensive secondary physics students book 4 pages 20-21
teachers book 34pages 10-12
Secondary physics KLB students book 4 page 42-47 
12 1-2
Uniform Circular Motion
Floating And Sinking
Application of uniform circular motion
Archimedes? principle
By the end of the lesson, the learner should be able to:


Explain centrifuge
Explain vertical and horizontal circles
Explain banked tracks


State Archimedes? principle
Verify Archimedes principle
Use of Archimedes principle to solve problems

Discussions
Explanations
Experiments

Experiments
Discussions
Calculations based on Archimedes Principle

String
Stone
Ruler

Water
Measuring cylinder
Weighing balance
Overflow can
Objects denser than water
Comprehensive secondary physics students book 4 pages 22-25
teachers book 34pages 10-12
Secondary physics KLB students book 4 page 47-53 
Comprehensive secondary physics students book 4 pages 28-29
teachers book 34pages 14-17
Secondary physics KLB students book 4 page 58-60 
12 3
Floating And Sinking
The laws of floatation Relative density
By the end of the lesson, the learner should be able to:


State the law of floatation
Define relative density

Discussions
Measuring

Density bottle
Overflow can
Spring balance
measuring cylinder
Comprehensive secondary physics students book 4 pages 29-33
teachers book 34pages 14-17
Secondary physics KLB students book 4 page 64-70 
12 4
Floating And Sinking
The laws of floatation Relative density
By the end of the lesson, the learner should be able to:


State the law of floatation
Define relative density

Discussions
Measuring

Density bottle
Overflow can
Spring balance
measuring cylinder
Comprehensive secondary physics students book 4 pages 29-33
teachers book 34pages 14-17
Secondary physics KLB students book 4 page 64-70 
12 5
Floating And Sinking
Applications of floating and sinking
By the end of the lesson, the learner should be able to:


Describe the applications of Archimedes Principle
Describe the applications of relative density (hydrometer)

Discussions
experiments

charts depicting the uses of Archimedes principle and the law of floatation
A hydrometer
Comprehensive secondary physics students book 4 pages 33-35
teachers book 34pages 14-17
Secondary physics KLB students book 4 page 75-77 

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