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Form 4 2025
TERM II
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
1

Opening

1 4
Electromagnetic Spectrum
The electromagnetic spectrum
By the end of the lesson, the learner should be able to:


Describe a complete electromagnetic spectrum

Discussions on the charge in wave length of electromagnetic radiations
explanations

charts showing the components of the electromagnetic spectrum
Comprehensive secondary physics students book 4 pages 37
teachers book 34pages 18-20
Secondary physics KLB students book 4 page 79 
1 5
Electromagnetic Spectrum
The properties of electromagnetic waves
By the end of the lesson, the learner should be able to:


State the properties of electromagnetic waves

Explaining the properties of each component of the electromagnetic spectrum

Charts showing the properties of electromagnetic waves
Comprehensive secondary physics students book 4 pages 37-38
teachers book 34pages 18-20
Secondary physics KLB students book 4 page 80-81 
2 1
Electromagnetic Spectrum
Detection of electromagnetic radiations
By the end of the lesson, the learner should be able to:


Describe the methods of detective electromagnetic radiations

Demonstrating and explaining how to detect electromagnetic radiations

Radiation detectors
Charts showing detectors of electromagnetic radiation
Comprehensive secondary physics students book 4 pages 38-39
teachers book 34pages 18-20
Secondary physics KLB students book 4 page 81
Golden tips Physics pages
175-176
2 2-3
Electromagnetic Spectrum
Detection of electromagnetic radiations
Applications of electromagnetic radiations
By the end of the lesson, the learner should be able to:


Describe the methods of detective electromagnetic radiations


Describe the applications of electromagnetic radiations including green house effect

Demonstrating and explaining how to detect electromagnetic radiations

Discussions of application of electromagnetic radiations

Radiation detectors
Charts showing detectors of electromagnetic radiation

Pictures and chart on application of electromagnetic radiations
Comprehensive secondary physics students book 4 pages 38-39
teachers book 34pages 18-20
Secondary physics KLB students book 4 page 81
Golden tips Physics pages
175-176
Comprehensive secondary physics students book 4 pages 42-45
teachers book 34pages 18-20
Secondary physics KLB students book 4 page 82 
2 4
Electromagnetic Spectrum
Applications of electromagnetic radiations
By the end of the lesson, the learner should be able to:


Describe the applications of electromagnetic radiations including green house effect

Discussions of application of electromagnetic radiations

Pictures and chart on application of electromagnetic radiations
Comprehensive secondary physics students book 4 pages 42-45
teachers book 34pages 18-20
Secondary physics KLB students book 4 page 82 
2 5
Electromagnetic Spectrum
Problems on C=FX
By the end of the lesson, the learner should be able to:


Solve numerical problems involving C=fx

Problem solving
Discussions
Explanations
Questions and answers

Questions and answers
exercises
Comprehensive secondary physics students book 4 pages 45
teachers book 34pages 20-21
Secondary physics KLB students book 4 page 80
3 1
Main Electricity
Source of main electricity
By the end of the lesson, the learner should be able to:


State sources of main electricity
Explain the sources of main electricity

Discussions
Educational trips

Pictures and charts showing sources of main electricity
Comprehensive secondary physics students book 4 pages 61
teachers book 3 pages 27-29
Secondary physics KLB students book 4 page 117 
3 2-3
Main Electricity
Power transmission
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 the transmission of electric power from the generating station
Explain the domestic wiring system

Discussions
Questions and answers

Photos of power transmission
Lines and power substations
Comprehensive secondary physics students book 4 pages 62
teachers book 3 pages 27-29
Secondary physics KLB students book 4 page 117-122 
3 4
Main Electricity
Power consumption
By the end of the lesson, the learner should be able to:


Define kilowatt hour
Determine the electrical energy consumption and cost

Discussions
calculations

Chats on power consumptions
Comprehensive secondary physics students book 4 pages 63-66
teachers book 3 pages 27-29
Secondary physics KLB students book 4 page 125-128
Principles of physics (M.Nelkon( pages 428 
3 5
Main Electricity
Power consumption
By the end of the lesson, the learner should be able to:


Define kilowatt hour
Determine the electrical energy consumption and cost

Discussions
calculations

Chats on power consumptions
Comprehensive secondary physics students book 4 pages 63-66
teachers book 3 pages 27-29
Secondary physics KLB students book 4 page 125-128
Principles of physics (M.Nelkon( pages 428 
4 1
Mains Electricity
Domestic wiring
By the end of the lesson, the learner should be able to:


Explain the domestic wiring system
Describe the domestic wiring system

Discussions
Demonstrations on building wiring
Drawing circuits

Fuses
Wires
Switches
Electrical appliances
Comprehensive secondary physics students book 4 pages 66-69
teachers book 4 pages 27-29
Secondary physics KLB students book 4 page 125-121-122 
4 2-3
Mains Electricity
Cathode Rays
Domestic electrical appliances
Production of cathode rays
By the end of the lesson, the learner should be able to:


Explain the function of fuse in domestic wiring
Explain the function of a two-way switch in domestic wiring


Describe the production of cathode rays
State and explain the properties of cathode rays

Discussions
demonstration

Describing the production of cathode rays
Stating the properties of cathode rays

domestic electrical appliances

Chart on the properties of cathode rays
Comprehensive secondary physics students book 4 pages 66-69
teachers book 4 pages 27-29
Secondary physics KLB students book 4 page 125-122-124 
Comprehensive secondary physics students book 4 pages 72-73
teachers book 4 pages 30-32
Secondary physics KLB students book 4 page 131-133 
4 4
Cathode Rays
Production of cathode rays
By the end of the lesson, the learner should be able to:


Describe the production of cathode rays
State and explain the properties of cathode rays

Describing the production of cathode rays
Stating the properties of cathode rays

Chart on the properties of cathode rays
Comprehensive secondary physics students book 4 pages 72-73
teachers book 4 pages 30-32
Secondary physics KLB students book 4 page 131-133 
4 5
Cathode Rays
The cathode rays Oscilloscope
By the end of the lesson, the learner should be able to:


Explain the functioning of the cathode ray oscilloscope
Explain the functioning of a T.V tube

Discussions of parts and functions of C.R.O

Chart of parts and functions of C.R.O
Comprehensive secondary physics students book 4 pages 73-75
teachers book 4 pages 30-32
Secondary physics KLB students book 4 page 133-134 
5 1
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 
5 2-3
X-Rays
Production of X-rays
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

Demonstrations
Discussions
Calculations involving x-rays

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 
5 4
X-Rays
Dangers of x-rays
By the end of the lesson, the learner should be able to:


Explain and state the dangers of X-rays
Highlight the precautions to be undertaken when handling x-rays

Discussions
Explanations

Charts showing the dangers of x-rays
Hospital with x-ray equipment
Comprehensive secondary physics students book 4 pages 84
teachers book 4 pages 35-36
Secondary physics KLB students book 4 page 149 
5 5
X-Rays
Uses of x-rays
By the end of the lesson, the learner should be able to:

By the end of the lesson the learner should be able to
State the uses of X-rays
Explain the uses of X-rays

Discussions

Hospital with X-ray equipment
Comprehensive secondary physics students book 4 pages 84
teachers book 4 pages 35-36
Secondary physics KLB students book 4 page 148
6 1
Photo Electric Effect
Photo electric emissions
By the end of the lesson, the learner should be able to:

By the end of the lesson ,the learner should be able to
Perform simple experiments to illustrate photo electric effect
Describe simple experiments to illustrate photoelectric effect

Experiments
discussions

source of light
Metallic surfaces
Photo cell
Comprehensive secondary physics students book 4 pages 87-88
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 151-152 
6 2-3
Photo Electric Effect
Photo-Electric
Photo electric emissions
Factors effecting photoelectric emissions
By the end of the lesson, the learner should be able to:

By the end of the lesson ,the learner should be able to
Perform simple experiments to illustrate photo electric effect
Describe simple experiments to illustrate photoelectric effect


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

Experiments
discussions

Discussions
Demonstrations

source of light
Metallic surfaces
Photo cell

charts
Comprehensive secondary physics students book 4 pages 87-88
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 151-152 
Comprehensive secondary physics students book 4 pages 88-90
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 156-158 
6 4
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
6 5
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
7 1
Photo-Electric
Application of photoelectric effect
By the end of the lesson, the learner should be able to:


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

Demonstrations
Discussions

Charts on the photo cell and how it works
Solar panels
Watch cells
Comprehensive secondary physics students book 4 pages 92-93
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 160-163 
7 2-3
Photo-Electric
Application of photoelectric effect
By the end of the lesson, the learner should be able to:


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

Demonstrations
Discussions

Charts on the photo cell and how it works
Solar panels
Watch cells
Comprehensive secondary physics students book 4 pages 92-93
teachers book 4 pages 38-40
Secondary physics KLB students book 4 page 160-163 
7 4
Radio Activity
Types of radiation
By the end of the lesson, the learner should be able to:


Describe the three types of radiations produced by radioactive elements

Discussions

Radiation
detectors
Comprehensive secondary physics students book 4 pages 96-100
Secondary physics KLB students book 4 page 167-171 
7 5
Radio Activity
Types of radiation
By the end of the lesson, the learner should be able to:


Describe the three types of radiations produced by radioactive elements

Discussions

Radiation
detectors
Comprehensive secondary physics students book 4 pages 96-100
Secondary physics KLB students book 4 page 167-171 
8 1
Radio-Activity
Detecting nuclear radiations
By the end of the lesson, the learner should be able to:

explain how a diffusion cloud chamber works

Demonstrations
discussions

Radiation detectors
Comprehensive secondary physics students book 4 pages 100
Secondary physics KLB students book 4 page 173-174 
8 2-3
Radio-Activity
Radio-active decay
By the end of the lesson, the learner should be able to:

define radio-active decay and half life

discussion

Charts on radio-active decay
Comprehensive secondary physics students book 4 pages 100-102
teachers book 4 pages 42-45
Secondary physics KLB students book 4 page 176-181 
8 4
Radio-Activity
Hazards of radioactivity
By the end of the lesson, the learner should be able to:



Explain the dangers of radioactive emissions


discussions

diffusion cloud chamber
Comprehensive secondary physics students book 4 pages 105-106
teachers book 4 pages 42-45
Secondary physics KLB students book 4 page 182 
8-9

MID-TERM EXAM and break

10 1
Radioactivity
Nuclear fission and fusion
By the end of the lesson, the learner should be able to:


Define nuclear fission and nuclear fusion
Write balanced nuclear equations
State the application of radioactivity

Discussions
Problem solving

Periodic table
Comprehensive secondary physics students book 4 pages 100-108
teachers book 4 pages 42-45
Secondary physics KLB students book 4 page 181-184 
10 2-3
Radioactivity
Electronics
Nuclear fission and fusion
Conductors and semi-conductors
By the end of the lesson, the learner should be able to:


Define nuclear fission and nuclear fusion
Write balanced nuclear equations
State the application of radioactivity


Differentiate between conductors and semi-conductors

Discussions
Problem solving

Discussions
Experiments

Periodic table

Some semi-conductors
Some insulator
Comprehensive secondary physics students book 4 pages 100-108
teachers book 4 pages 42-45
Secondary physics KLB students book 4 page 181-184 
Comprehensive secondary physics students book 4 pages 110-111
teachers book 4 pages 45-48
Secondary physics KLB students book 4 page 187-189 
10 4
Electronics
Intrinsic and extrinsic semi-conductors
By the end of the lesson, the learner should be able to:


Explain doping in semi-conductors
Explain the working of p-n junction diode
Distinguish between intrinsic and extrinsic semi-conductors

Discussions
Experiments

Samples of semi-conductors
Complete circuit
Transistors
Junction diode
Comprehensive secondary physics students book 4 pages 111-112
teachers book 4 pages 48-52
Secondary physics KLB students book 4 page 189-194 
10 5
Electronics
Intrinsic and extrinsic semi-conductors
By the end of the lesson, the learner should be able to:


Explain doping in semi-conductors
Explain the working of p-n junction diode
Distinguish between intrinsic and extrinsic semi-conductors

Discussions
Experiments

Samples of semi-conductors
Complete circuit
Transistors
Junction diode
Comprehensive secondary physics students book 4 pages 111-112
teachers book 4 pages 48-52
Secondary physics KLB students book 4 page 189-194 
11 1
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 
11 2-3
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 
11 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 
11 4-5
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 
12-14

End term exams and closing


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