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Form 3 2025
TERM I
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WK LSN TOPIC SUB-TOPIC OBJECTIVES T/L ACTIVITIES T/L AIDS REFERENCE REMARKS
2 1
Linear Motion
Introduction of linear motion
By the end of the lesson, the learner should be able to:


Define distance, displacement, speed, velocity and acceleration

Defining distance, speed, displacement, velocity and acceleration

Charts on motion
Trolleys
Inclined planes
Comprehensive secondary physics book 3 pages 1
Comprehensive secondary physics teachers book 3 pages 1-3
Secondary physics KLB students book 2 page 1-7 
2 2
Linear Motion
Introduction of linear motion
By the end of the lesson, the learner should be able to:


Define distance, displacement, speed, velocity and acceleration

Defining distance, speed, displacement, velocity and acceleration

Charts on motion
Trolleys
Inclined planes
Comprehensive secondary physics book 3 pages 1
Comprehensive secondary physics teachers book 3 pages 1-3
Secondary physics KLB students book 2 page 1-7 
2 3-4
Linear Motion
Determining velocity
By the end of the lesson, the learner should be able to:


Describe experiments to determine velocity

Describing experiments on velocity

Trolleys
Stop watches
Graph paper
Ticker timer
Comprehensive secondary physics book 3 pages 2-3
Comprehensive secondary physics teachers book 3 pages 1-3
Secondary physics KLB students book 3 page 4-6 
2 5
Linear Motion
Motion time graphs
By the end of the lesson, the learner should be able to:


Plot and explain motion time graphs

Plotting and interpreting motion-time graphs

Appropriate charts on velocity time and distance graphs
Graph paper
Data showing different distance, velocity and time
Comprehensive secondary physics book 3 pages 5-9
Comprehensive secondary physics teachers book 3 pages 8-18
Secondary physics KLB students book 3 page 4-6 
3 1
Linear Motion
Measuring speed, velocity and acceleration
By the end of the lesson, the learner should be able to:


Describe experiments to determine and measure speed, velocity and acceleration

Describing experiments to determine and measure speed velocity & acceleration

Graphs
Ticker timer
Tapes
Graphs
Comprehensive secondary physics students book 3 pages 2-3
Comprehensive secondary physics teachers book 3 pages 1-3
Secondary physics KLB students book 3 page 18-25 
3 2
Linear Motion
Measuring speed, velocity and acceleration
By the end of the lesson, the learner should be able to:


Describe experiments to determine and measure speed, velocity and acceleration

Describing experiments to determine and measure speed velocity & acceleration

Graphs
Ticker timer
Tapes
Graphs
Comprehensive secondary physics students book 3 pages 2-3
Comprehensive secondary physics teachers book 3 pages 1-3
Secondary physics KLB students book 3 page 18-25 
3 3-4
Linear Motion
Acceleration
By the end of the lesson, the learner should be able to:


Describe acceleration

Describing acceleration
Problem solving

Charts on acceleration
Graphs
Data on velocity and time
Comprehensive secondary physics students book 3 pages 2-3
Comprehensive secondary physics teachers book 3 pages 1-3
Secondary physics KLB students book 3 page 7-8 
3 5
Linear Motion
Equations of motion
By the end of the lesson, the learner should be able to:


Derive and apply the equations of uniform acceleration

Stating the equations of motion
Deriving the equations of motion
Applying the equations of motion

Graphs
Worked examples on motion
Comprehensive secondary physics students book 3 pages 7-9
Comprehensive secondary physics teachers book 3 pages3-5
Secondary physics KLB students book 3 page 26-29 
4

Opener exam

4 2
Linear Motion
Acceleration due to gravity
By the end of the lesson, the learner should be able to:

;
Determine acceleration due to gravity by free-fall and simple pendulum

Determining acceleration by tree-fall and pendulum method

Pendulum bob
String
Stop watches
Ticker-timer
Comprehensive secondary physics students book 3 pages 3-5
Comprehensive secondary physics teachers book 3 pages1-3
Secondary physics KLB students book 3 page 29-36 
4 3-4
Linear Motion
Acceleration due to gravity
By the end of the lesson, the learner should be able to:

;
Determine acceleration due to gravity by free-fall and simple pendulum

Determining acceleration by tree-fall and pendulum method

Pendulum bob
String
Stop watches
Ticker-timer
Comprehensive secondary physics students book 3 pages 3-5
Comprehensive secondary physics teachers book 3 pages1-3
Secondary physics KLB students book 3 page 29-36 
4 5
Refraction Of Light
The meaning of refraction
By the end of the lesson, the learner should be able to:


Describe simple experiments to illustrate refraction of light

Experiments demonstrating refraction of light

Beakers
Water
Stick or glass rod
Basins
Coins
Glass blocks
Pin
Comprehensive secondary physics students book 3 pages 11-12
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 41-46
5 1
Refraction Of Light
Laws of refraction
By the end of the lesson, the learner should be able to:


State the laws of refraction and define refractive index

Discovering Snell?s law of refraction through experiments
Defining refractive index
Stating the laws of refraction

Glass blocks
Pins
Soft board
Plain paper
Geometric set
Comprehensive secondary physics students book 3 pages 12-14
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 47-61 
5 2
Refraction Of Light
Laws of refraction
By the end of the lesson, the learner should be able to:


State the laws of refraction and define refractive index

Discovering Snell?s law of refraction through experiments
Defining refractive index
Stating the laws of refraction

Glass blocks
Pins
Soft board
Plain paper
Geometric set
Comprehensive secondary physics students book 3 pages 12-14
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 47-61 
5 3-4
Refraction Of Light
Refractive index
By the end of the lesson, the learner should be able to:


Determine the refractive index of a given substance

Experiments to determine the refractive index of rates and glass by real and apparent depth method

Water
Pins
Plain papers
Coins
Beakers
Comprehensive secondary physics students book 3 pages 14-15
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 61-68
5 5
Refraction Of Light
Application of a total internal reflection in a prism periscope, optical fibre
By the end of the lesson, the learner should be able to:


Explain the working of a prisms and optical fibres among other applications

Making a periscope
Discussion on working of an optical fibre

Charts on total internal reflection and applications
Comprehensive secondary physics students book 3 pages 18-19
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 76-79 
6 1
Refraction Of Light
Dispersion of white light and recombination of colors of the spectrum
By the end of the lesson, the learner should be able to:


Describe an experiment to illustrate the dispersion of light

Experiment on dispersion of light using glass prisms

Triangular glass prisms
Source of light
Screen
Comprehensive secondary physics students book 3 pages 19-20
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 79-89
6 2
Refraction Of Light
Dispersion of white light and recombination of colors of the spectrum
By the end of the lesson, the learner should be able to:


Describe an experiment to illustrate the dispersion of light

Experiment on dispersion of light using glass prisms

Triangular glass prisms
Source of light
Screen
Comprehensive secondary physics students book 3 pages 19-20
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 79-89
6 3-4
Refraction Of Light
Dispersion of white light and recombination of colors of the spectrum
Problems of refractive index and critical angle
By the end of the lesson, the learner should be able to:


Describe an experiment to illustrate the dispersion of light


Solve problems involving the refractive index and critical angle

Experiment on dispersion of light using glass prisms

Discussions and problem solving in critical angle using the formulae sin C=i/n and n=sin i/sin r

Triangular glass prisms
Source of light
Screen

Review questions
Past exams
Examples in the topic
Comprehensive secondary physics students book 3 pages 19-20
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 79-89
Comprehensive secondary physics book 3 pages 21-22
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 82-86
6 5
Refraction Of Light
Problems of refractive index and critical angle
By the end of the lesson, the learner should be able to:


Solve problems involving the refractive index and critical angle

Discussions and problem solving in critical angle using the formulae sin C=i/n and n=sin i/sin r

Review questions
Past exams
Examples in the topic
Comprehensive secondary physics book 3 pages 21-22
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 82-86
7 1
Refraction Of Light
Total material reflection and its effect Critical angle
By the end of the lesson, the learner should be able to:


Describe an experiment to explain the total internal reflection and its effects
Define critical angle

Experiments to explain the total internal reflection and its effects
Defining critical angle
Observations and discussions on critical angle
Total internal reflection

Glass blocks
Soft boards
Pins
Geometrical set
Source of light
Comprehensive secondary physics students book 3 pages 16-17
Comprehensive secondary physics teachers book 3 pages6-9
Secondary physics KLB students book 3 page 68-76 
7-8

Midterm exam

8 5
Newton?s Law?s Of Motion
Newton?s Laws of motion
By the end of the lesson, the learner should be able to:


State the Newton?s laws of motion
State and explain the significance of a Newton?s laws of motion
Describe simple experiments to illustrate inertion

Discussion on Newton?s laws
Experiments to illustrate
? Education Plus Agencies
Newton?s laws of motion

Inclined plane
Trolley
Marbles
Spring balances
Comprehensive secondary physics students book 3 pages 23-27
Comprehensive secondary physics teachers book 3 pages 13-17
Secondary physics KLB students book 3 page 87-102 
9 1
Newton?s Law Of Motion
Conservation of linear momentum Elastic collision Inelastic collision Recoil velocity
By the end of the lesson, the learner should be able to:

By the end of the lesson, the leaner should be able to:
State the law of conservation of momentum
Define elastic and inelastic collisions
Determine recoil velocity

Discussions of the laws of conservation of linear momentum
Determining recoil velocity

Marbles
Trolleys
Meter rules
Stop watches
Plasticine
Comprehensive secondary physics students book 3 pages 28-30
Comprehensive secondary physics teachers book 3 pages 13-17
Secondary physics KLB students book 3 page 103-108 
9 2
Newton?s Law Of Motion
Conservation of linear momentum Elastic collision Inelastic collision Recoil velocity
By the end of the lesson, the learner should be able to:

By the end of the lesson, the leaner should be able to:
State the law of conservation of momentum
Define elastic and inelastic collisions
Determine recoil velocity

Discussions of the laws of conservation of linear momentum
Determining recoil velocity

Marbles
Trolleys
Meter rules
Stop watches
Plasticine
Comprehensive secondary physics students book 3 pages 28-30
Comprehensive secondary physics teachers book 3 pages 13-17
Secondary physics KLB students book 3 page 103-108 
9 3-4
Newton?s Law Of Motion
Conservation of linear momentum Elastic collision Inelastic collision Recoil velocity
Friction
By the end of the lesson, the learner should be able to:

By the end of the lesson, the leaner should be able to:
State the law of conservation of momentum
Define elastic and inelastic collisions
Determine recoil velocity


Define friction
State and explain types of frictions
Describe and experiment to illustrate friction and state the applications of friction
State laws of friction

Discussions of the laws of conservation of linear momentum
Determining recoil velocity

Defining friction
Stating and explaining types of frictions
Describing an experiment to illustrate friction
Stating the applications of the frictions
Stating laws of friction

Marbles
Trolleys
Meter rules
Stop watches
Plasticine

Block of wood
Spring balance
Pulley
Flat surface
Comprehensive secondary physics students book 3 pages 28-30
Comprehensive secondary physics teachers book 3 pages 13-17
Secondary physics KLB students book 3 page 103-108 
Comprehensive secondary physics students book 3 pages 28-39
Comprehensive secondary physics teachers book 3 pages 13-17
Secondary physics KLB students book 3 page 109-115 
9 5
Newton?s Law Of Motion
Friction
By the end of the lesson, the learner should be able to:


Define friction
State and explain types of frictions
Describe and experiment to illustrate friction and state the applications of friction
State laws of friction

Defining friction
Stating and explaining types of frictions
Describing an experiment to illustrate friction
Stating the applications of the frictions
Stating laws of friction

Block of wood
Spring balance
Pulley
Flat surface
Comprehensive secondary physics students book 3 pages 28-39
Comprehensive secondary physics teachers book 3 pages 13-17
Secondary physics KLB students book 3 page 109-115 
10 1
Newton?s Laws Of Motion
Viscosity
By the end of the lesson, the learner should be able to:

By the end of the lesson, the leaner should be able to:
Define viscosity
Explain the concept of terminal velocity

Distinguishing viscous from- non-viscous liquids
Defining viscous liquids
Defining and explaining terminal viscosity

Glycerin
Paraffin
Water
Ball bearings
Stat watches
Meter rule
Measuring cylinders
Comprehensive secondary physics students book 3 pages33
Comprehensive secondary physics teachers book 3 pages 13-17
Secondary physics KLB students book 3 page 115-119 
10 2
Newton?s Laws Of Motion
Viscosity
By the end of the lesson, the learner should be able to:

By the end of the lesson, the leaner should be able to:
Define viscosity
Explain the concept of terminal velocity

Distinguishing viscous from- non-viscous liquids
Defining viscous liquids
Defining and explaining terminal viscosity

Glycerin
Paraffin
Water
Ball bearings
Stat watches
Meter rule
Measuring cylinders
Comprehensive secondary physics students book 3 pages33
Comprehensive secondary physics teachers book 3 pages 13-17
Secondary physics KLB students book 3 page 115-119 
10 3-4
Energy, Work, Power And Machines
Energy
By the end of the lesson, the learner should be able to:


Define energy
Describe various forms of energy

Defining energy
Stating the forms of energy
Identifying and describing energy transformation

Chart on the forms of energy and transformation
Comprehensive secondary physics students book 3 pages34-35
Comprehensive secondary physics teachers book 3 pages 17-18
Secondary physics KLB students book 3 page 121,122-125 
10 5
Energy, Work, Power And Machines
Sources of energy Renewable Non-renewable
By the end of the lesson, the learner should be able to:


Describe renewable and non-renewable sources of energy

Discussion on the sources of energy
Descriptions of renewable and non-renewable sources of energy

Chart on the sources of energy
Comprehensive secondary physics students book 3 pages41
Comprehensive secondary physics teachers book 3 pages 19-21
Secondary physics KLB students book 3 page 121,122-125
11 1
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 
11 2
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 
11 3-4
Energy, Work, Power And Machines
Energy, Work, Power And Machines
Simple machines
The law of conservation of energy
By the end of the lesson, the learner should be able to:


State and describe the efficiency of various machines


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

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

Discussion on the law of conservation of energy

Levers
Pulleys
Inclined planes
Strings
Masses

Chart on the laws of conservation of energy
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 
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 
12

End-term Exam

12 4
Energy, Work, Power And Machines
Work
By the end of the lesson, the learner should be able to:


Define work
Explain the concept of work and energy

Experiment on work done by moving objects through a distance
Problem solving

Masses
Wooden block
Spring balance
Comprehensive secondary physics students book 3 pages 42-43
Comprehensive secondary physics teachers book 3 pages 18-22
Secondary physics KLB students book 3 page 125-132 
12 5
Energy, Work, Power And Machines
Work
By the end of the lesson, the learner should be able to:


Define work
Explain the concept of work and energy

Experiment on work done by moving objects through a distance
Problem solving

Masses
Wooden block
Spring balance
Comprehensive secondary physics students book 3 pages 42-43
Comprehensive secondary physics teachers book 3 pages 18-22
Secondary physics KLB students book 3 page 125-132 

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