Mechanics and Thermal Physics

Mechanical Properties - Hooke's Law experiments
Mechanical Properties - Young's Modulus

By the end of the lesson, the learner should be able to:

- Verify Hooke's Law through experiments
- Determine the elastic limit
- Calculate spring constant from graphs

- Explain modulus of elasticity
- Calculate Young's Modulus using Y=stress/strain
- Solve numerical problems

In groups, learners are guided to:
- Carry out experiments to verify Hooke's Law
- Record data in tables
- Plot and analyze graphs
- Carry out activities to determine modulus of elasticity
- Use the formula Y=stress/strain
- Solve numerical problems

Why does a string snap easily compared to a spring?

- Triumph Physics Grade 10 pg. 42-45
- Springs
- Masses (50g each)
- Graph paper
- Ruler
- Triumph Physics Grade 10 pg. 45-48
- Wires
- Masses
- Micrometer screw gauge
- Calculator

- Practical assessment - Data analysis - Written reports
- Practical assessment - Written tests - Problem solving

Mechanics and Thermal Physics

Mechanical Properties - Applications

By the end of the lesson, the learner should be able to:

- Describe applications of mechanical properties
- Relate properties to construction and manufacturing
- Appreciate material selection in engineering

In groups, learners are guided to:
- Use print/non-print media to search for applications
- Discuss applications in groups
- Present findings to the class

Why is it important to study mechanical properties of materials?

- Triumph Physics Grade 10 pg. 48-49
- Digital devices
- Reference books
- Charts

- Oral questions - Presentations - Written assignments

Mechanics and Thermal Physics

Mechanical Properties - Review
Temperature and Thermal Expansion - Temperature

By the end of the lesson, the learner should be able to:

- Solve problems on mechanical properties
- Apply concepts to real situations
- Demonstrate understanding of stress, strain and elasticity

In groups, learners are guided to:
- Solve numerical problems
- Answer revision questions
- Discuss challenging concepts

Why is it important to study mechanical properties of materials?

- Triumph Physics Grade 10 pg. 49
- Exercise books
- Calculators
- Past papers
- Triumph Physics Grade 10 pg. 51-52
- Beakers
- Water (hot, cold, room temperature)
- Thermometers

- Written tests - Problem solving - Self-assessment

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Liquid in glass thermometers

By the end of the lesson, the learner should be able to:

- Describe liquid expansion devices
- Explain how mercury and alcohol thermometers work
- Compare properties of thermometric liquids

In groups, learners are guided to:
- Carry out activities to measure temperature using mercury and alcohol thermometers
- Observe liquid expansion in thermometers
- Compare the two thermometers

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 52-56
- Mercury thermometer
- Alcohol thermometer
- Beaker
- Hot water

- Practical assessment - Observation - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Bimetallic thermometers
Temperature and Thermal Expansion - Electronic temperature devices

By the end of the lesson, the learner should be able to:

- Explain how bimetallic devices work
- Demonstrate bimetallic strip operation
- Relate bimetallic strips to thermostats

- Explain how thermocouples work
- Describe resistive temperature devices
- Appreciate modern temperature measurement

In groups, learners are guided to:
- Construct a simple bimetallic strip
- Heat the strip and observe bending
- Discuss applications in thermostats
- Use print/non-print media to search for information on thermocouples and RTDs
- Discuss how they measure temperature
- Present findings

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 56-58
- Metal strips (copper, steel)
- Heat source
- Ruler
- Protractor
- Triumph Physics Grade 10 pg. 58-61
- Digital devices
- Pictures of thermocouples
- Reference books

- Practical assessment - Observation - Oral questions
- Oral questions - Presentations - Written assignments

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Infrared radiators

By the end of the lesson, the learner should be able to:

- Explain how infrared thermometers work
- Use infrared thermometer to measure temperature
- Appreciate non-contact temperature measurement

In groups, learners are guided to:
- Take turns using infrared thermometer to measure forehead temperature
- Compare readings
- Discuss applications

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 61-62
- Infrared thermometer
- Digital devices
- Reference books

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Expansion in solids

By the end of the lesson, the learner should be able to:

- Investigate thermal expansion in solids
- Demonstrate expansion using ball and ring experiment
- Appreciate expansion effects on structures

In groups, learners are guided to:
- Carry out activities to demonstrate thermal expansion (metal bar and gauge, ball and ring)
- Observe expansion when heated
- Discuss observations

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 63-65
- Metal bar
- Ball and ring
- Heat source
- Tongs

- Practical assessment - Observation - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Linear expansivity of metals

By the end of the lesson, the learner should be able to:

- Explain linear expansivity
- Compare expansion rates of different metals
- Calculate linear expansivity

In groups, learners are guided to:
- Carry out activities to demonstrate expansion of different metals (copper, iron, aluminum)
- Compare expansion using a pointer
- Record observations

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 65-67
- Metal rods (copper, iron, aluminum)
- Heat source
- Pointer
- Ruler

- Practical assessment - Data recording - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Bimetallic applications
Temperature and Thermal Expansion - Expansion in liquids
Temperature and Thermal Expansion - Unusual expansion of water

By the end of the lesson, the learner should be able to:

- Describe how bimetallic strips work
- Explain applications in thermostats and fire alarms
- Appreciate use in electrical devices

- Explain anomalous expansion of water
- Investigate water behavior from 0°C to 4°C
- Relate anomalous expansion to ice formation and aquatic life

In groups, learners are guided to:
- Demonstrate bending of bimetallic strips when heated
- Discuss applications in thermostats
- Explain use in electrical appliances
- Carry out activities to demonstrate anomalous expansion of water
- Plot graph of water level against temperature
- Discuss importance to aquatic life

Why is the lid of a sufuria made wider?
Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 67
- Bimetallic strips
- Heat source
- Pictures of thermostats
- Digital devices
- Triumph Physics Grade 10 pg. 67-68
- Round-bottom flask
- Glass tube
- Colored water
- Triumph Physics Grade 10 pg. 68-70
- Ice
- Thermometer
- Flask and tube
- Graph paper

- Observation - Oral questions - Written assignments
- Practical assessment - Graph plotting - Written tests

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Gas expansion

By the end of the lesson, the learner should be able to:

- Investigate thermal expansion in gases
- Demonstrate gas expansion using balloon and bottle
- Relate gas expansion to hot air balloons

In groups, learners are guided to:
- Carry out activities to demonstrate expansion in gases
- Attach balloon to bottle and place in hot/cold water
- Observe balloon size changes

Why does a glass bottle break when water in it freezes?

- Triumph Physics Grade 10 pg. 70
- Plastic bottle
- Balloon
- Hot water
- Ice

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Applications in pipes

By the end of the lesson, the learner should be able to:

- Describe expansion joints in steam pipes
- Explain why expansion gaps are needed
- Appreciate thermal expansion considerations in engineering

In groups, learners are guided to:
- Use print/non-print media to search for applications of thermal expansion
- Discuss expansion joints in pipes
- Present findings

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 71-72
- Digital devices
- Pictures of expansion joints
- Reference books

- Presentations - Oral questions - Written assignments

Mechanics and Thermal Physics

Temperature and Thermal Expansion - Applications in construction

By the end of the lesson, the learner should be able to:

- Explain expansion gaps in railway lines
- Describe thermal expansion in steel bridges
- Appreciate expansion considerations in construction

In groups, learners are guided to:
- Discuss expansion gaps in railway lines
- Explain bridge design with rollers
- Use digital media to view examples

Why is the lid of a sufuria made wider?

- Triumph Physics Grade 10 pg. 72
- Digital devices
- Pictures of railway lines
- Pictures of bridges

- Oral questions - Written tests - Observation

Mechanics and Thermal Physics

Temperature and Thermal Expansion - More applications
Moments and Equilibrium - Centre of gravity of regular objects

By the end of the lesson, the learner should be able to:

- Explain slack in overhead wires
- Describe thermostats in electrical devices
- Appreciate thermal expansion in everyday devices

- Determine the centre of gravity of regularly shaped objects
- Explain the concept of centre of gravity
- Relate centre of gravity to real-life applications like furniture design

In groups, learners are guided to:
- Discuss thermal expansion in electrical wires
- Explain how thermostats work
- Relate to electrical appliances
- Design and carry out activities to determine centre of gravity of regular objects
- Balance rectangular card on table edge
- Mark and identify centre of gravity

Why is the lid of a sufuria made wider?
How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 73-74
- Digital devices
- Pictures of thermostats
- Reference books
- Triumph Physics Grade 10 pg. 75-76
- Rectangular cards
- Ruler
- Pen
- Table

- Oral questions - Written assignments - Presentations
- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Moments and Equilibrium - Centre of gravity of irregular objects
Moments and Equilibrium - Stable, unstable and neutral equilibrium

By the end of the lesson, the learner should be able to:

- Determine the centre of gravity of irregularly shaped objects
- Use plumb line method
- Appreciate importance in design and balance

In groups, learners are guided to:
- Carry out activities to determine centre of gravity of irregular objects using plumb line
- Mark lines and find intersection
- Verify by balancing

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 76-78
- Irregular hardboard
- Plumb line
- Pins
- Retort stand
- Triumph Physics Grade 10 pg. 78-80
- Bunsen burner
- Flat surface
- Various objects
- Digital devices

- Practical assessment - Observation - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Stability factors

By the end of the lesson, the learner should be able to:

- Investigate factors affecting stability of objects
- Explain how base area and centre of gravity affect stability
- Appreciate stability considerations in vehicle and building design

In groups, learners are guided to:
- Carry out activities to investigate factors affecting stability
- Use objects of different shapes and sizes
- Measure angles at which objects topple
- Discuss findings

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 80-82
- Various objects
- Protractor
- Ruler
- Weights

- Practical assessment - Data recording - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Turning effect of force

By the end of the lesson, the learner should be able to:

- Explain the meaning of moment of a force
- Calculate moment using Moment = Force × Distance
- Relate moments to opening doors and using tools

In groups, learners are guided to:
- Discuss with peers the meaning of moment of force
- Use digital devices to search for information
- Share personal experiences of applying moments

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 82-84
- Digital devices
- Reference books
- Calculator
- Exercise books

- Oral questions - Written assignments - Observation

Mechanics and Thermal Physics

Moments and Equilibrium - Demonstrating moments
Moments and Equilibrium - Principle of moments

By the end of the lesson, the learner should be able to:

- Demonstrate the turning effect of forces about a point
- Investigate how distance affects moment
- Relate to everyday applications like door handles

- Verify the principle of moments
- Explain that clockwise moments = anticlockwise moments
- Apply principle to solve problems

In groups, learners are guided to:
- Carry out activities to demonstrate turning effect using door and spring balance
- Apply force at different points
- Record force required and calculate moments
- Carry out activities to verify principle of moments using metre rule and weights
- Balance rule with different weights
- Record distances and calculate moments

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 84-87
- Spring balance
- Wire
- Door
- Measuring tape
- Triumph Physics Grade 10 pg. 87-89
- Metre rule
- Weights (50g, 100g, 200g)
- Thread
- Retort stand

- Practical assessment - Data recording - Written tests
- Practical assessment - Data analysis - Problem solving

Mechanics and Thermal Physics

Moments and Equilibrium - Two support points

By the end of the lesson, the learner should be able to:

- Demonstrate moments about two points of support
- Calculate resultant forces at support points
- Solve numerical problems

In groups, learners are guided to:
- Carry out activities to demonstrate moments with two spring balances
- Balance plank with weights
- Calculate forces at support points

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 89-91
- Metre rule
- Spring balances
- Weights
- Calculator

- Practical assessment - Problem solving - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Torque and couple forces

By the end of the lesson, the learner should be able to:

- Describe torque and couple in turning objects
- Calculate torque using Torque = Force × Distance
- Relate to steering wheels and screwdrivers

In groups, learners are guided to:
- Carry out activities to demonstrate couple using wooden strip and spring balances
- Compare single force with couple
- Discuss applications

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 91-94
- Wooden strip
- Spring balances
- Screw
- Table

- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Moments and Equilibrium - Resolving forces
Moments and Equilibrium - Applications in daily life

By the end of the lesson, the learner should be able to:

- Demonstrate resolution of forces
- Resolve forces into horizontal and vertical components
- Calculate components using F cos θ and F sin θ

In groups, learners are guided to:
- Carry out activities to demonstrate resolution using pulleys and weights
- Draw parallelogram of forces
- Calculate resultant force

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 94-96
- Pulleys
- Weights
- Paper
- Ruler
- Protractor
- Triumph Physics Grade 10 pg. 96-98
- Digital devices
- Reference books
- Pictures of tools
- Charts

- Practical assessment - Problem solving - Written tests

Mechanics and Thermal Physics

Moments and Equilibrium - Vehicle stability and load
Moments and Equilibrium - Review

By the end of the lesson, the learner should be able to:

- Investigate factors affecting vehicle stability
- Relate load positioning to stability
- Appreciate safety considerations in loading vehicles

- Solve problems on moments and equilibrium
- Apply principles to real situations
- Demonstrate understanding of torque and stability

In groups, learners are guided to:
- Visit nearby garage and observe vehicles
- Discuss with garage staff about loading
- Note features contributing to stability
- Solve numerical problems on moments
- Answer revision questions
- Discuss challenging concepts

How does the stability of bodies affect the designs of their structures?

- Triumph Physics Grade 10 pg. 98-99
- Nearby garage
- Exercise books
- Pens
- Digital devices
- Triumph Physics Grade 10 pg. 99
- Exercise books
- Calculators
- Past papers

- Observation - Oral questions - Written reports
- Written tests - Problem solving - Self-assessment

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Basic concepts

By the end of the lesson, the learner should be able to:

- Explain the meaning of energy, work and power
- Distinguish between the three concepts
- Relate to real-life examples like lifting objects and running

In groups, learners are guided to:
- Discuss with peers the meaning of energy, work, power and machines
- Give examples from daily life
- Record definitions

How do machines make work easier?

- Triumph Physics Grade 10 pg. 100-102
- Digital devices
- Reference books
- Exercise books

- Oral questions - Written assignments - Group discussions

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Work done

By the end of the lesson, the learner should be able to:

- Explain work as force × distance
- Calculate work done using W = F × d
- Solve numerical problems on work

In groups, learners are guided to:
- Carry out activities to demonstrate work
- Push objects across the room
- Calculate work done in different scenarios

How do machines make work easier?

- Triumph Physics Grade 10 pg. 102-105
- Books
- Spring balance
- Ruler
- Calculator

- Practical assessment - Problem solving - Written tests

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Forms of energy

By the end of the lesson, the learner should be able to:

- Explain energy as ability to do work
- Identify different forms of energy
- Relate energy sources to renewable and non-renewable

In groups, learners are guided to:
- Discuss different forms of energy
- Give examples of energy sources
- Classify sources as renewable or non-renewable

How do machines make work easier?

- Triumph Physics Grade 10 pg. 105-106
- Digital devices
- Charts
- Reference books
- Pictures

- Oral questions - Written assignments - Observation

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Mechanical energy
Energy, Work, Power and Machines - Energy transformations
Energy, Work, Power and Machines - Law of conservation

By the end of the lesson, the learner should be able to:

- Explain gravitational potential energy using PE = mgh
- Explain kinetic energy using KE = ½mv²
- Calculate potential and kinetic energy

- Demonstrate transformation of mechanical energy
- Explain energy changes in swinging pendulum
- Relate to real-life applications like roller coasters

In groups, learners are guided to:
- Drop tennis ball from different heights
- Observe energy transformation
- Calculate PE and KE using formulas
- Carry out activities to demonstrate energy transformation using pendulum
- Observe potential to kinetic energy changes
- Discuss energy at different points

How do machines make work easier?

- Triumph Physics Grade 10 pg. 106-109
- Tennis ball
- Metre rule
- Calculator
- Exercise books
- Triumph Physics Grade 10 pg. 109-112
- Pendulum (mass and string)
- Retort stand
- Clamp
- Digital devices
- Triumph Physics Grade 10 pg. 112-115
- Pendulum
- Ball
- Marble
- Ramp
- Calculator

- Practical assessment - Problem solving - Written tests
- Practical assessment - Observation - Oral questions

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Vehicle energy systems

By the end of the lesson, the learner should be able to:

- Identify energy transformations in vehicles
- Explain chemical to mechanical energy conversion
- Appreciate safety measures in vehicles

In groups, learners are guided to:
- Visit nearby garage and observe vehicle components
- Identify energy transformations
- Discuss safety precautions

How do machines make work easier?

- Triumph Physics Grade 10 pg. 115-117
- Nearby garage
- Exercise books
- Pens
- Resource persons

- Observation - Oral questions - Written reports

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Rate of doing work

By the end of the lesson, the learner should be able to:

- Explain power as rate of doing work
- Calculate power using P = W/t
- Solve numerical problems on power

In groups, learners are guided to:
- Carry out activities to measure power (running up stairs)
- Calculate work done and time taken
- Determine power output

How do machines make work easier?

- Triumph Physics Grade 10 pg. 117-119
- Stopwatch
- Metre rule
- Weighing scale
- Staircase
- Calculator

- Practical assessment - Problem solving - Written tests

Mechanics and Thermal Physics

Energy, Work, Power and Machines - MA, VR and efficiency

By the end of the lesson, the learner should be able to:

- Explain mechanical advantage as Load/Effort
- Explain velocity ratio and efficiency
- Calculate MA, VR and efficiency

In groups, learners are guided to:
- Discuss the meaning of MA, VR and efficiency
- Use mathematical relationships
- Solve numerical problems

How do machines make work easier?

- Triumph Physics Grade 10 pg. 119-122
- Digital devices
- Reference books
- Calculator
- Exercise books

- Written tests - Problem solving - Oral questions

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Types of levers
Energy, Work, Power and Machines - Inclined plane

By the end of the lesson, the learner should be able to:

- Describe levers and their types
- Explain principle of moments in levers
- Calculate VR and MA of levers

- Explain how inclined plane works
- Calculate VR = length/height
- Investigate factors affecting MA

In groups, learners are guided to:
- Search for information on levers
- Identify different classes of levers
- Calculate VR = effort arm/load arm
- Investigate how length affects MA of inclined plane
- Use trolley on ramp
- Record data and calculate MA

How do machines make work easier?

- Triumph Physics Grade 10 pg. 122-125
- Digital devices
- Pictures of levers
- Reference books
- Calculator
- Triumph Physics Grade 10 pg. 125-128
- Trolley
- Inclined plane
- Weights
- Pulley
- Ruler

- Written tests - Problem solving - Oral questions
- Practical assessment - Data analysis - Written tests

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Wheel and axle system

By the end of the lesson, the learner should be able to:

- Explain how wheel and axle works
- Calculate VR = radius of wheel/radius of axle
- Relate to winches and door knobs

In groups, learners are guided to:
- Investigate wheel and axle using rod and handle
- Apply force at different positions
- Calculate VR and MA

How do machines make work easier?

- Triumph Physics Grade 10 pg. 128-130
- Rod with handle
- Thread
- Weights
- Ruler
- Calculator

- Practical assessment - Problem solving - Written tests

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Gear systems
Energy, Work, Power and Machines - Hydraulic systems

By the end of the lesson, the learner should be able to:

- Explain how gears work
- Calculate VR = teeth on driven/teeth on driver
- Relate to bicycles and clocks

In groups, learners are guided to:
- Search for information on gear systems
- Discuss how gears change speed and force
- Solve numerical problems

How do machines make work easier?

- Triumph Physics Grade 10 pg. 130-132
- Digital devices
- Pictures of gears
- Reference books
- Calculator
- Triumph Physics Grade 10 pg. 132-134
- Pictures of hydraulic lifts

- Written tests - Problem solving - Oral questions

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Other simple machines

By the end of the lesson, the learner should be able to:

- Explain pulleys, screws and pulley belts
- Calculate VR for different pulley systems
- Relate to real applications

In groups, learners are guided to:
- Search for information on pulleys, screws and belts
- Discuss their working principles
- Calculate VR for each type

How do machines make work easier?

- Triumph Physics Grade 10 pg. 134-138
- Digital devices
- Pictures
- Reference books
- Calculator

- Written tests - Problem solving - Presentations

Mechanics and Thermal Physics

Energy, Work, Power and Machines - Complex machines

By the end of the lesson, the learner should be able to:

- Describe use of machines in treadmills, elevators and escalators
- Explain simple machines in excavators
- Appreciate machines in making work easier

In groups, learners are guided to:
- Search for information on complex machines
- Identify simple machines in them
- Discuss applications

How do machines make work easier?

- Triumph Physics Grade 10 pg. 138-141
- Digital devices
- Pictures
- Reference books
- Charts

- Presentations - Oral questions - Written assignments

Mechanics and Thermal Physics
Mechanics and Thermal Physics
Waves and Optics

Energy, Work, Power and Machines - Making machines
Energy, Work, Power and Machines - Review
Properties of Waves - Wave properties in real-life situations

By the end of the lesson, the learner should be able to:

- Construct simple machines using local materials
- Test functionality of constructed machines
- Appreciate practical applications of machines

- Solve problems on energy, work, power and machines
- Apply concepts to real situations
- Demonstrate understanding of all topics

In groups, learners are guided to:
- Use locally available materials to construct simple machines
- Test the machines
- Present to class for assessment
- Solve numerical problems
- Answer revision questions
- Discuss challenging concepts

How do machines make work easier?

- Triumph Physics Grade 10 pg. 141
- Wood
- Ropes
- Pulleys
- Nails
- Local materials
- Triumph Physics Grade 10 pg. 142
- Exercise books
- Calculators
- Past papers
- Triumph Physics 10 pg. 139
- Digital devices
- Reference books
- Writing materials

- Project work - Practical assessment - Peer assessment
- Written tests - Problem solving - Self-assessment

Waves and Optics

Properties of Waves - Demonstrating wave properties using a ripple tank
Properties of Waves - Rectilinear propagation of waves

By the end of the lesson, the learner should be able to:

- Identify the parts of a ripple tank and state their functions
- Set up a ripple tank for wave demonstration
- Connect wave patterns observed in a ripple tank to natural phenomena like water waves at the beach

In groups, learners are guided to:

- Observe a ripple tank and its components
- Label key parts of the ripple tank
- Copy and complete a table showing parts and functions of a ripple tank
- Fill the tank with water and test wave generation

What role does each part of a ripple tank play in demonstrating wave behaviour?

- Triumph Physics 10 pg. 141
- Ripple tank with components
- Bar and ball dippers
- Light source
- White screen
- Triumph Physics 10 pg. 143
- Ripple tank
- Manila paper
- Markers

- Observation - Oral questions - Practical assessment

Waves and Optics

Properties of Waves - Reflection of waves
Properties of Waves - Refraction of waves

By the end of the lesson, the learner should be able to:

- State the law of reflection
- Demonstrate reflection of waves using different shaped barriers
- Relate wave reflection to everyday applications like mirrors, periscopes and acoustic design

In groups, learners are guided to:

- Generate plane waves and observe reflection off straight barriers
- Measure and compare angles of incidence and reflection
- Observe reflection patterns using concave and convex barriers
- Sketch wave patterns before and after reflection

How does the shape of a barrier affect the reflection pattern of waves?

- Triumph Physics 10 pg. 144
- Ripple tank
- Metal barriers (straight, concave, convex)
- Ruler
- Manila paper
- Triumph Physics 10 pg. 147
- Clear plastic sheets (rectangular and convex)
- Manila paper
- Markers

- Practical assessment - Observation - Oral questions

Waves and Optics

Properties of Waves - Diffraction of waves
Properties of Waves - Interference of waves
Properties of Waves - Formation and properties of stationary waves

By the end of the lesson, the learner should be able to:

- Define diffraction as bending of waves around obstacles or through gaps
- Demonstrate diffraction using a ripple tank
- Relate diffraction to hearing sound around corners and Wi-Fi signal distribution

In groups, learners are guided to:

- Position metal barriers with gaps in the ripple tank
- Observe wave spreading after passing through gaps of different sizes
- Observe diffraction around obstacles and at edges
- Sketch diffraction patterns and discuss applications

How does the size of an opening affect the amount of wave diffraction?

- Triumph Physics 10 pg. 150
- Ripple tank
- Metal barriers with gaps
- Manila paper
- Markers
- Triumph Physics 10 pg. 152
- Two spherical dippers
- Triumph Physics 10 pg. 155
- Rubber bands
- Slinky spring
- Fixed block
- Smooth surface

- Practical assessment - Observation - Oral questions

Waves and Optics

Properties of Waves - Applications of stationary waves in vibrating strings
Properties of Waves - Vibrating air columns in closed and open pipes

By the end of the lesson, the learner should be able to:

- Derive expressions for fundamental frequency and overtones in vibrating strings
- Calculate frequencies of harmonics in vibrating strings
- Connect vibrating strings to stringed musical instruments like guitars and pianos

- Derive expressions for frequencies in closed and open pipes
- Differentiate between harmonics produced in closed and open pipes
- Connect vibrating air columns to wind instruments like flutes and clarinets

In groups, learners are guided to:

- Set up a string attached to a fixed support and pulley with masses
- Pluck the string and observe stationary wave patterns
- Measure distance between nodes and antinodes
- Calculate fundamental frequency and overtones

- Blow air across closed and open pipes and listen to sounds produced
- Compare pitch differences between closed and open pipes
- Discuss why closed pipes produce only odd harmonics
- Calculate frequencies of harmonics in pipes

How does changing string tension affect the pitch of sound produced?
Why do closed pipes produce only odd harmonics while open pipes produce all harmonics?

- Triumph Physics 10 pg. 159
- String (1-2 metres)
- Fixed support
- Pulley and masses
- Ruler

- Triumph Physics 10 pg. 161
- Closed pipe (boiling tube)
- Open pipe
- Ruler

- Written assignments - Practical assessment - Oral questions
- Written assignments - Oral questions - Practical assessment

Waves and Optics

Properties of Waves - Resonance and frequency modulated waves
Properties of Waves - Doppler effect and applications

By the end of the lesson, the learner should be able to:

- Explain resonance and its conditions
- Describe how FM radio waves carry sound information
- Connect resonance to tuning musical instruments and FM to radio broadcasting

In groups, learners are guided to:

- Set up a glass tube in water with a tuning fork to demonstrate resonance
- Adjust air column length to find resonance point
- Tune an FM radio receiver to different stations
- Research how FM radio waves carry sound information

How does a radio receiver select and play a specific FM station?

- Triumph Physics 10 pg. 164
- Glass tube
- Tuning fork
- Container with water
- FM radio receiver
- Triumph Physics 10 pg. 166
- Digital devices
- Internet access
- Writing materials

- Oral questions - Written assignments - Observation

Waves and Optics

Radioactivity and Stability of Isotopes - Terminologies used in radioactivity
Radioactivity and Stability of Isotopes - Types and properties of alpha, beta and gamma radiations

By the end of the lesson, the learner should be able to:

- Define terms used in radioactivity including atom, nuclide, half-life and radioisotope
- Explain factors that determine nuclear stability
- Connect radioactivity concepts to medical imaging and carbon dating

In groups, learners are guided to:

- Use digital devices or reference books to find meanings of radioactivity terms
- Discuss atomic number, mass number and isotopes
- Explain nuclear stability and background radiation
- Share findings on terminology in class discussion

What makes some atomic nuclei stable while others are unstable?

- Triumph Physics 10 pg. 169
- Digital devices
- Reference books
- Periodic table
- Triumph Physics 10 pg. 171
- Property cards
- Manila paper
- Markers

- Oral questions - Written assignments - Observation

Waves and Optics

Radioactivity and Stability of Isotopes - Behaviour of radiations in electric and magnetic fields
Radioactivity and Stability of Isotopes - Nuclear equations showing how radionuclides attain stability

By the end of the lesson, the learner should be able to:

- Describe how alpha, beta and gamma radiations behave in electric and magnetic fields
- Draw diagrams showing deflection of radiations in fields
- Connect radiation deflection to particle accelerators and mass spectrometers

In groups, learners are guided to:

- Draw bar charts comparing penetrating power and ionising effects
- Draw diagrams showing deflection in electric and magnetic fields
- Discuss why gamma rays are not deflected
- Present charts to class for peer learning

Why are alpha and beta particles deflected in opposite directions in electric and magnetic fields?

- Triumph Physics 10 pg. 173
- Manila paper
- Coloured pencils
- Rulers
- Triumph Physics 10 pg. 175
- Periodic table
- Chart of nuclides
- Exercise books

- Practical assessment - Written assignments - Observation

Electricity and Magnetism

Electrostatics - Origin of charges in a material
Electrostatics - Electric field patterns around charges
Electrostatics - Law of electrostatics
Electrostatics - Charging by friction and contact methods
Electrostatics - Charging by induction and separation methods

By the end of the lesson, the learner should be able to:

- Explain the structure of an atom and origin of electric charges
- Describe how materials become positively or negatively charged
- Connect static electricity to everyday experiences like getting shocked after walking on carpet

- State the law of electrostatics
- Demonstrate attraction and repulsion between charged objects
- Connect electrostatic forces to how dust clings to TV screens and plastic surfaces

In groups, learners are guided to:

- Discuss the origin of charges on materials (atom, nucleus, protons, neutrons, electrons)
- Perform experiments rubbing balloons on woollen cloth
- Observe attraction and repulsion of charged objects
- Discuss SI unit of charge and law of electrostatics

- Suspend a charged plastic ruler and bring another charged ruler close
- Observe attraction and repulsion between similarly and oppositely charged objects
- Rub glass rod with silk and observe interaction with charged ruler
- Discuss the law of electrostatic charges

How do objects become electrically charged through the transfer of electrons?
What determines whether two charged objects will attract or repel each other?

- Triumph Physics 10 pg. 194
- Balloons
- Woollen cloth
- Small pieces of paper
- Triumph Physics 10 pg. 196
- Manila paper
- Coloured pencils
- Rulers
- Triumph Physics 10 pg. 199
- Plastic rulers
- Glass rod
- Silk cloth
- Woollen cloth
- Triumph Physics 10 pg. 200
- Plastic pen
- Dry woollen cloth
- Polystyrene ball
- Glass rod
- Triumph Physics 10 pg. 203
- Polythene rod
- Metal balls on insulated stands
- Connecting wire

- Oral questions - Observation - Practical assessment
- Practical assessment - Oral questions - Observation

Electricity and Magnetism

Electrostatics - Charge distribution on conductors of various shapes
Electrostatics - Functions of various parts of an electroscope

By the end of the lesson, the learner should be able to:

- Explain how charges distribute on conductors of different shapes
- Draw charge distribution on spherical, wedge-shaped and pear-shaped conductors
- Connect charge concentration at points to lightning conductors and Van de Graaff generators

In groups, learners are guided to:

- Research charge distribution on different shaped conductors
- Draw diagrams showing charge distribution on spherical, wedge-shaped, pear-shaped and sharp conductors
- Discuss why charges concentrate at pointed ends
- Present findings on charge distribution to class

Why do charges concentrate at the pointed ends of conductors?

- Triumph Physics 10 pg. 205
- Digital devices
- Reference books
- Manila paper
- Triumph Physics 10 pg. 207
- Gold leaf electroscope
- Paper clips
- Aluminium foil
- Plastic container

- Written assignments - Oral questions - Observation

Electricity and Magnetism

Electrostatics - Charging an electroscope by contact and induction
Electrostatics - Uses of a leaf electroscope

By the end of the lesson, the learner should be able to:

- Describe how to charge an electroscope by contact and induction
- Demonstrate charging and discharging an electroscope
- Connect electroscope charging to understanding how photocopiers transfer toner to paper

In groups, learners are guided to:

- Touch charged polythene rod to metallic cap and observe leaf divergence
- Discharge electroscope by touching cap and observe leaf collapse
- Charge electroscope by induction using charged rod and earthing
- Compare charges acquired by contact and induction methods

Why does the electroscope leaf diverge when the cap is touched by a charged object?

- Triumph Physics 10 pg. 208
- Gold leaf electroscope
- Polythene rod
- Glass rod
- Silk and woollen cloth
- Triumph Physics 10 pg. 210
- Various charged objects
- Different materials for testing

- Practical assessment - Oral questions - Observation

Electricity and Magnetism

Electrostatics - Applications of electrostatics in day-to-day life

By the end of the lesson, the learner should be able to:

- Describe applications of electrostatics in various fields
- Explain safety measures against electrostatic hazards
- Connect electrostatics to spray painting, photocopiers, air purifiers and lightning protection

In groups, learners are guided to:

- Research applications of electrostatics using digital devices
- Discuss spray guns, photocopiers, fingerprinting and electrostatic precipitators
- Discuss lightning formation and safety measures during thunderstorms
- Present findings on applications and safety to class

How do electrostatic precipitators help reduce air pollution from factory emissions?

- Triumph Physics 10 pg. 212
- Digital devices
- Reference books
- Manila paper

- Written assignments - Oral questions - Observation