Living Things and their Environment

The Cell - The light microscope

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

- Identify the parts of a light microscope
- State the functions of the parts of a light microscope
- Handle the light microscope with care and precision

In groups, learners are guided to:
- Observe a real light microscope and identify its parts
- Use reference materials to search for information on parts of a light microscope
- Draw a well-labelled diagram of a light microscope
- Take turns to locate parts on the actual microscope

What is the use of a light microscope?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 82
- Light microscope
- Charts showing parts of a microscope
- Digital devices

- Observation - Oral questions - Drawing assessment

Living Things and their Environment

The Cell - Functions of microscope parts
The Cell - Use and care for a light microscope
The Cell - Using the light microscope
The Cell - Preparing plant cell specimens

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

- Describe the functions of the eyepiece lens, objective lenses, and revolving nosepiece
- Explain the role of adjustment knobs in focusing
- Connect microscope functions to medical laboratory work

In groups, learners are guided to:
- Complete a table matching microscope parts to their functions
- Discuss functions of eyepiece, objective lenses, and nosepiece
- Role-play as laboratory technicians identifying microscope parts

How do the different parts of a microscope work together to magnify specimens?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 84
- Light microscope
- Function charts
- Digital devices
- Spotlight Integrated Science Learner's Book Grade 8 pg. 86
- Lens paper
- Microscope cover
- Spotlight Integrated Science Learner's Book Grade 8 pg. 87
- Transparent paper with writings
- Glass slides
- Spotlight Integrated Science Learner's Book Grade 8 pg. 89
- Onion bulb
- Glass slides and cover slips
- Distilled water
- Forceps, scalpel, mounted needle

- Written assignments - Oral questions - Peer assessment

Living Things and their Environment

The Cell - Observing plant cells
The Cell - Components of a plant cell
The Cell - Observing animal cells
The Cell - Making animal cell models

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

- Observe onion epidermal cells under low and medium power
- Stain cells using iodine solution
- Relate cell observation skills to disease diagnosis in hospitals

In groups, learners are guided to:
- Examine slide under low power then medium power objective lens
- Repeat preparation using iodine solution instead of water
- Draw well-labelled diagrams of cells observed
- Compare stained and unstained cells

Why do we use stains when observing cells under a microscope?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 90
- Light microscope
- Prepared onion slides
- Iodine solution
- Droppers
- Spotlight Integrated Science Learner's Book Grade 8 pg. 91
- Plant cell charts
- Carton box, manila paper
- Pencil colours
- Scissors, glue
- Spotlight Integrated Science Learner's Book Grade 8 pg. 93
- Permanent slides of animal cells
- Lens paper
- Charts
- Spotlight Integrated Science Learner's Book Grade 8 pg. 94
- Carton box
- Manila papers
- Scissors, glue, scalpel

- Drawing assessment - Practical skills - Oral questions

Living Things and their Environment

The Cell - Functions of cell components

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

- State the functions of cell membrane, cytoplasm, and nucleus
- Explain the role of chloroplasts and cell wall in plant cells
- Connect cell functions to everyday processes like digestion and energy production

In groups, learners are guided to:
- Read reference materials on functions of cell components
- Complete crossword puzzle identifying components by their functions
- Discuss how cell membrane controls movement of materials
- Search the Internet for animations on cell functions

What are the functions of the components of a cell?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 95
- Digital devices
- Reference books
- Crossword puzzle worksheets

- Written assignments - Oral questions - Crossword completion

Living Things and their Environment

The Cell - Functions of vacuole and tonoplast
The Cell - Similarities between plant and animal cells
The Cell - Differences between plant and animal cells
The Cell - Meaning of magnification

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

- Describe the functions of the vacuole and tonoplast
- Explain how the vacuole stores cell sap
- Relate vacuole functions to why fruits are juicy and plants stay upright

- Identify differences between plant and animal cells
- Explain why plant cells have cell walls and chloroplasts
- Connect cell differences to why plants can make food while animals cannot

In groups, learners are guided to:
- Discuss the role of vacuole in storing cell sap
- Explain how tonoplast regulates movement between vacuole and cytoplasm
- Draw diagrams showing vacuole position in plant cells
- Compare vacuole size in plant and animal cells
- Study charts comparing plant and animal cells
- Complete a table showing differences in cell wall, chloroplasts, and vacuole
- Discuss why plants have chloroplasts for photosynthesis
- Present findings to classmates

Why is the vacuole important in plant cells?
Why do plant cells have structures that animal cells lack?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 96
- Plant cell diagrams
- Digital devices
- Reference materials
- Spotlight Integrated Science Learner's Book Grade 8 pg. 97
- Plant and animal cell models
- Comparison charts
- Digital devices
- Spotlight Integrated Science Learner's Book Grade 8 pg. 98
- Comparison charts
- Reference books
- Digital devices
- Spotlight Integrated Science Learner's Book Grade 8 pg. 99
- Magnification pictures
- Digital devices
- Light microscope

- Oral questions - Written assignments - Diagram labelling
- Table completion - Oral presentation - Written test

Living Things and their Environment

The Cell - Calculating magnification
The Cell - Solving magnification problems

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

- Calculate the total magnification of a light microscope
- Record magnification power of different objective lenses
- Apply mathematical skills to solve scientific problems

In groups, learners are guided to:
- Read magnification power of eyepiece and objective lenses
- Multiply eyepiece magnification by objective lens magnification
- Calculate total magnification at low, medium, and high power
- Solve problems involving magnification calculations

How do we calculate the total magnification of a microscope?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 100
- Light microscope
- Exercise books
- Calculators
- Problem worksheets
- Calculators
- Exercise books

- Calculation exercises - Written test - Oral questions

Living Things and their Environment

The Cell - Uses of light microscope in healthcare
The Cell - Uses of light microscope in research and industry

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

- Explain uses of the light microscope in healthcare
- Describe how microscopes help identify diseases
- Relate microscope use to hospital laboratory work and disease diagnosis

In groups, learners are guided to:
- Discuss how scientists use microscopes to study micro-organisms
- Explain how laboratory professionals identify diseases using microscopes
- Search the Internet for information on microscope uses in medicine
- Write notes on healthcare applications

How do light microscopes contribute to healthcare?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 101
- Digital devices
- Reference books
- Healthcare posters
- Spotlight Integrated Science Learner's Book Grade 8 pg. 102
- Reference materials
- Assessment worksheets

- Written notes - Oral presentation - Research assessment

Living Things and their Environment

The Cell - End of sub-strand assessment
Structure of the cell membrane

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

- Complete assessment on The Cell sub-strand
- Demonstrate understanding of cell components and their functions
- Show confidence in applying cell knowledge

In groups, learners are guided to:
- Complete written assessment on cells
- Draw and label plant and animal cells
- Calculate magnification problems
- Receive feedback and corrections

How well have we understood the concepts of the cell?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 103
- Assessment papers
- Drawing materials
- Exercise books
- Spotlight Integrated Science Learner's Book Grade 8 pg. 104
- Liquid soap, water, sugar
- Straws, cotton thread
- Shallow tray

- End of topic test - Drawing assessment - Calculation test

Living Things and their Environment

Properties of the cell membrane
Effects of heat on cell membrane - Potato experiment
Effects of heat on cell membrane - Beetroot experiment
Effects of dilute acids and alkalis on cell membrane
Demonstrating diffusion using perfume
Role of diffusion in gaseous exchange
Role of diffusion in absorption and plants
Factors affecting diffusion

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

- Describe the properties of the cell membrane
- Explain what semi-permeable means
- Relate semi-permeability to how tea bags allow flavour through but not leaves

- Define diffusion
- Demonstrate diffusion using perfume in the classroom
- Relate diffusion to how cooking smells spread through a house

- Discuss properties of cell membrane based on soap bubble activity
- Explain semi-permeability using diagrams
- Discuss how cell membrane is sensitive to temperature and pH
- Share findings with classmates
- Spray perfume in one corner of the classroom
- Observe how the scent spreads across the room
- Record the order in which learners detect the scent
- Discuss how perfume particles moved from high to low concentration

What are the properties of the cell membrane?
How do particles move from one place to another?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 107
- Cell membrane diagrams
- Digital devices
- Reference books
- Spotlight Integrated Science Learner's Book Grade 8 pg. 108
- Potatoes, cork borer
- Concentrated sugar solution
- Beakers, petri dishes
- Spotlight Integrated Science Learner's Book Grade 8 pg. 109
- Beetroot, cork borer
- Water baths, thermometers
- Boiling tubes, test tube rack
- Spotlight Integrated Science Learner's Book Grade 8 pg. 111
- Beetroot cores
- Dilute HCl, dilute NaOH
- Test tubes, syringes
- Spotlight Integrated Science Learner's Book Grade 8 pg. 113
- Perfume or deodorant spray
- Stopwatch
- Notebooks
- Spotlight Integrated Science Learner's Book Grade 8 pg. 114
- Gaseous exchange diagrams
- Digital devices
- Reference books
- Spotlight Integrated Science Learner's Book Grade 8 pg. 115
- Plant diagrams
- Reference materials
- Spotlight Integrated Science Learner's Book Grade 8 pg. 116
- Reference books
- Charts

- Oral questions - Written notes - Group discussion
- Observation - Oral questions - Class discussion

Living Things and their Environment

Demonstrating osmosis using visking tubing

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

- Define osmosis
- Demonstrate osmosis using visking tubing
- Connect osmosis to how dried fruits swell when soaked in water

In groups, learners are guided to:
- Tie one end of visking tubing and fill with concentrated sugar solution
- Immerse the tubing in a beaker of distilled water
- Observe changes after thirty minutes
- Explain movement of water molecules through the membrane

How do water molecules move through a semi-permeable membrane?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 118
- Visking tubing
- Concentrated sugar solution
- Distilled water, beaker

- Practical report - Observation - Written explanation

Living Things and their Environment

Demonstrating osmosis using Irish potato
Demonstrating osmosis using banana peel strips

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

- Investigate osmosis using potato cores
- Measure changes in length of potato cores in different solutions
- Relate to why vegetables become crisp in water and soft in salt

In groups, learners are guided to:
- Obtain six potato cores of equal length (50mm)
- Place three cores in distilled water and three in concentrated sugar solution
- Measure length after forty minutes
- Record and compare changes in length

What happens to plant cells in different solutions?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 120
- Irish potatoes, cork borer
- Distilled water
- Concentrated sugar solution
- Ruler, boiling tubes
- Spotlight Integrated Science Learner's Book Grade 8 pg. 121
- Raw green banana peel
- Concentrated salt solution
- Beakers, scalpel

- Data recording - Measurement accuracy - Written analysis

Living Things and their Environment

Factors affecting osmosis
Role of osmosis in water absorption and stomata

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

- Describe factors affecting the rate of osmosis
- Explain how temperature and concentration gradient affect osmosis
- Relate to why plants wilt faster on hot days

In groups, learners are guided to:
- Use digital devices to search for factors affecting osmosis
- Discuss effect of temperature on osmosis rate
- Explain how concentration gradient affects osmosis
- Discuss effect of membrane thickness on osmosis

What factors affect the rate of osmosis?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 123
- Digital devices
- Reference books
- Charts
- Spotlight Integrated Science Learner's Book Grade 8 pg. 124
- Plant diagrams
- Reference materials

- Oral questions - Written notes - Group presentation

Living Things and their Environment

Role of osmosis in osmoregulation and plant support
Importance of diffusion and osmosis
Introduction to the menstrual cycle
Phases of the menstrual cycle
Ovulation and luteal phase
Irregular periods and bleeding

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

- Explain the role of osmosis in osmoregulation in the kidney
- Describe how osmosis provides support in plants
- Relate to why kidneys filter blood and plants droop without water

- Define the menstrual cycle
- State the average duration of the menstrual cycle
- Recognise menstruation as a normal biological process for females

In groups, learners are guided to:
- Discuss how kidneys use osmosis to filter blood
- Observe plant leaves at different times of day
- Explain wilting and turgidity in plants
- Discuss feeding mechanism of insectivorous plants
- Search print or non-print media for information on the menstrual cycle
- Discuss the meaning and purpose of the menstrual cycle
- Explain that the cycle prepares the body for possible pregnancy
- Write notes on the menstrual cycle

How does osmosis help regulate water in living things?
What is the menstrual cycle and why does it occur?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 125
- Young plants
- Digital devices
- Reference books
- Spotlight Integrated Science Learner's Book Grade 8 pg. 126
- Assessment worksheets
- Reference materials
- Spotlight Integrated Science Learner's Book Grade 8
- Digital devices
- Reference books
- Charts on menstrual cycle
- Menstrual cycle diagrams
- Charts
- Ovulation charts
- Reference materials
- Health education materials

- Observation records - Written explanation - Oral questions
- Oral questions - Written notes - Group discussion

Living Things and their Environment

Menstrual pain and discomfort
Managing menstrual cycle challenges
Menstrual hygiene management
The male reproductive cells

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

- Describe menstrual pain and its causes
- Explain other discomforts associated with menstruation
- Know that menstrual discomfort is manageable and not a barrier to daily activities

In groups, learners are guided to:
- Discuss menstrual cramps and their causes
- Explain other symptoms like bloating and mood changes
- Discuss how pain affects daily activities
- Write notes on managing menstrual discomfort

Why do some people experience pain during menstruation?

- Spotlight Integrated Science Learner's Book Grade 8
- Health education charts
- Digital devices
- Reference materials
- Health education materials
- Planning worksheets
- Sanitary products samples
- Digital devices
- Sperm cell diagrams
- Reference books

- Written notes - Oral questions - Class discussion

Living Things and their Environment

The female reproductive cell
The process of fertilisation

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

- Describe the structure of an egg cell (ovum)
- Explain the function of the egg in reproduction
- Recognise that the egg provides nutrients for early embryo development

In groups, learners are guided to:
- Study diagrams of egg cells
- Identify parts: cell membrane, cytoplasm, nucleus
- Compare size of egg to sperm
- Discuss how the egg is released during ovulation

What is the structure and function of the egg cell?

- Spotlight Integrated Science Learner's Book Grade 8
- Egg cell diagrams
- Digital devices
- Reference materials
- Fertilisation diagrams
- Charts

- Diagram labelling - Written notes - Oral questions

Living Things and their Environment

Cell division after fertilisation
Implantation

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

- Describe what happens after fertilisation
- Explain how the zygote divides to form a blastocyst
- Connect cell division to how a single cell becomes a complete human

In groups, learners are guided to:
- Study diagrams showing cell division after fertilisation
- Explain how zygote divides into 2, 4, 8 cells and more
- Describe formation of blastocyst
- Discuss journey of blastocyst to the uterus

What happens to the zygote after fertilisation?

- Spotlight Integrated Science Learner's Book Grade 8
- Cell division diagrams
- Digital devices
- Reference books
- Implantation diagrams
- Charts

- Diagram sequencing - Oral questions - Written notes

Living Things and their Environment

Introduction to STIs
Symptoms of HIV/AIDS
Symptoms of gonorrhea, syphilis, and herpes

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

- Define sexually transmitted infections (STIs)
- List common STIs
- Recognise that STIs are preventable health conditions

- Outline symptoms of HIV/AIDS
- Explain the difference between HIV and AIDS
- Know that early testing and treatment help people with HIV live healthy lives

In groups, learners are guided to:
- Search for information on STIs from print and non-print materials
- Define STIs and explain how they spread
- List common STIs: HIV/AIDS, gonorrhea, syphilis, herpes
- Discuss importance of STI awareness
- Search for information on HIV/AIDS symptoms
- Discuss initial symptoms: fever, fatigue, swollen lymph nodes
- Explain progression to AIDS if untreated
- Discuss importance of testing and treatment

What are sexually transmitted infections?
What are the symptoms of HIV/AIDS?

- Spotlight Integrated Science Learner's Book Grade 8
- Health education materials
- Digital devices
- Reference books
- Spotlight Integrated Science Learner's Book Grade 8
- HIV/AIDS education materials
- Digital devices
- Charts
- Health education materials
- Reference books

- Oral questions - Written notes - Group discussion
- Written notes - Oral questions - Class discussion

Living Things and their Environment
Force and Energy

Prevention of STIs - Abstinence and faithfulness
Prevention of STIs - Other measures
Forms of energy in nature

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

- Explain prevention measures for STIs
- Describe abstinence and faithfulness as prevention methods
- Make informed decisions about personal health and relationships

In groups, learners are guided to:
- Discuss abstinence as the most effective prevention method
- Explain being faithful to one uninfected partner
- Discuss importance of knowing partner's STI status
- Write notes on prevention strategies

How can STIs be prevented?

- Spotlight Integrated Science Learner's Book Grade 8
- Health education materials
- Digital devices
- Prevention posters
- Reference books
- Spotlight Integrated Science pg. 130
- Digital resources
- Internet access

- Oral questions - Written notes - Class discussion

Force and Energy

Forms of energy - Chemical and electrical energy
Forms of energy - Mechanical energy
Forms of energy - Heat, light and sound energy

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

- Describe chemical energy and give examples
- Explain electrical energy and its sources
- Connect chemical energy to common items like batteries and food

In groups, learners are guided to:
- Discuss chemical energy and substances that contain it
- Explain electrical energy and how it is generated
- Identify devices that use chemical and electrical energy at home

How is chemical energy stored in substances?

- Spotlight Integrated Science pg. 130
- Batteries
- Electrical appliances
- Spotlight Integrated Science pg. 131
- Small stones
- Balls
- Working surface
- Spotlight Integrated Science pg. 132
- Candles
- Torches
- Musical instruments

- Oral questions - Observation - Practical assessment

Force and Energy

Energy transformation - Introduction
Energy transformation - Potential to kinetic energy
Energy transformation - Chemical to heat and light energy
Energy transformation - Electrical to heat energy

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

- Explain the meaning of energy transformation
- State the law of conservation of energy
- Recognize energy changes in cooking, transport and communication

In groups, learners are guided to:
- Discuss the meaning of energy transformation
- Explain that energy can neither be created nor destroyed
- Identify examples of energy transformation in nature

Why is energy transformation important in our daily lives?

- Spotlight Integrated Science pg. 132
- Digital resources
- Charts
- Spotlight Integrated Science pg. 133
- Small stones
- Working table
- Stopwatch
- Candles
- Matchsticks
- Working surface
- Spotlight Integrated Science pg. 134
- Electric water heater
- Beaker
- Water

- Oral questions - Written assignments - Observation

Force and Energy

Energy transformation - Kinetic to sound energy
Energy transformation - Chemical to electrical to light energy
Energy transformation - Using a pendulum
Energy transformation in appliances - Gas cylinder and electric cooker

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

- Demonstrate transformation of kinetic energy to sound energy
- Explain how clapping produces sound
- Connect this transformation to musical instruments and daily sounds

- Demonstrate energy transformation using a pendulum
- Explain the continuous transformation between potential and kinetic energy
- Connect pendulum motion to playground swings and clock mechanisms

In groups, learners are guided to:
- Clap hands and observe the energy transformation
- Discuss how kinetic energy produces sound energy
- Identify other examples of kinetic to sound energy transformation
- Set up a simple pendulum
- Observe and discuss energy transformation at different points
- Record the energy changes at points A, B and C

How does movement produce sound?
How does a pendulum demonstrate continuous energy transformation?

- Spotlight Integrated Science pg. 134
- Musical instruments
- Digital resources
- Cells
- Switch
- Wires
- Bulb
- Spotlight Integrated Science pg. 135
- String
- Bob
- Retort stand
- Spotlight Integrated Science pg. 138
- Charts showing appliances
- Digital resources

- Practical assessment - Observation - Oral questions

Force and Energy

Energy transformation in appliances - Generators and dynamos
Energy transformation in appliances - Solar panels and microphones

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

- Explain energy transformation in diesel generators
- Describe how a bicycle dynamo works
- Relate generators to power supply during blackouts

In groups, learners are guided to:
- Study pictures of diesel generator and bicycle dynamo
- Discuss the energy transformations in each appliance
- Identify the input and output energy forms

How do generators provide electricity during power outages?

- Spotlight Integrated Science pg. 138
- Bicycle with dynamo
- Charts
- Digital resources
- Digital resources
- Internet access

- Oral questions - Observation - Written questions

Force and Energy

Energy transformation in appliances - Electric heaters and LEDs
Safety measures - Road accidents and seat belts

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

- Explain energy transformation in electric heaters
- Describe how light emitting diodes (LEDs) work
- Relate LEDs to energy-efficient lighting in homes and streets

In groups, learners are guided to:
- Study pictures of electric heaters and LED torches
- Discuss the energy transformations in each device
- Compare energy efficiency of different devices

Why are LED bulbs preferred for lighting?

- Spotlight Integrated Science pg. 140
- LED torch
- Electric heater
- Charts
- Spotlight Integrated Science pg. 141
- Charts on road safety
- Digital resources

- Oral questions - Observation - Written questions

Force and Energy

Safety measures - Bright light and loud sounds

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

- Explain dangers of bright light to the eyes
- Describe how to protect against loud sounds
- Relate eye and ear protection to workplace safety and concerts

In groups, learners are guided to:
- Discuss health hazards from bright light such as solar eclipse
- Explain protection measures like sunglasses and earmuffs
- Discuss situations requiring eye and ear protection

How can we protect our eyes and ears from harmful energy?

- Spotlight Integrated Science pg. 142
- Sunglasses
- Earmuffs
- Charts

- Oral questions - Observation - Written questions

Force and Energy

Safety measures - Fire and electrical accidents
Applications of energy transformation - Daily life examples
Applications of energy transformation - Poster making
Meaning of pressure - Introduction
Meaning of pressure - Formula and SI unit

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

- Explain dangers of fire caused by energy transformation
- Describe safety measures when using electrical appliances
- Connect fire safety to kitchen and workshop practices

- Create posters appreciating energy transformation
- Present applications of energy transformation to classmates
- Relate energy transformation to career opportunities in engineering and technology

In groups, learners are guided to:
- Discuss accidents caused by fire and electricity
- Explain prevention and mitigation strategies
- Practice safety measures when lighting a gas cooker
- Make posters appreciating energy transformation
- Present findings to classmates
- Discuss career opportunities related to energy

What precautions should we take when using fire and electricity?
How can we share knowledge about energy transformation with others?

- Spotlight Integrated Science pg. 143
- Charts on fire safety
- Digital resources
- Spotlight Integrated Science pg. 144
- Charts
- Spotlight Integrated Science pg. 145
- Manila papers
- Markers
- Charts
- Spotlight Integrated Science pg. 147
- Different types of shoes
- Sandy surface
- Spotlight Integrated Science pg. 149
- Charts
- Calculators

- Oral questions - Written assignments - Observation
- Project assessment - Peer assessment - Oral presentations

Force and Energy

Pressure in solids - Using toothpick and rubber
Pressure in solids - Using pin and softboard
Pressure in solids - Effect of force variation
Pressure in liquids - Using a tin can

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

- Demonstrate pressure in solids using a toothpick
- Explain why sharp ends exert more pressure
- Connect this concept to using sharp needles for injections

In groups, learners are guided to:
- Cut a toothpick into two pieces
- Push the sharp and blunt ends against a rubber
- Observe and discuss which end pierces the rubber

Why do sharp objects pierce through surfaces easily?

- Spotlight Integrated Science pg. 149
- Toothpicks
- Rubber
- Scissors
- Spotlight Integrated Science pg. 150
- Pins
- Softboard
- Carton box
- Pencils
- Sharpener
- Spotlight Integrated Science pg. 151
- Tall tin can
- Sellotape
- Nail and hammer
- Basin

- Practical assessment - Observation - Oral questions

Force and Energy

Pressure in liquids - Using glass tubes and balloons
Pressure in liquids - Variation with density
Determining pressure in solids - Using wooden block and sand

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

- Demonstrate pressure in liquids using balloons
- Explain how depth affects pressure in liquids
- Connect this to diving and swimming at different depths

In groups, learners are guided to:
- Connect balloons to glass tubes
- Lower the tubes to different depths in water
- Observe the inflation of balloons at different depths

How does depth affect the pressure exerted by a liquid?

- Spotlight Integrated Science pg. 152
- Glass tubes
- Balloons
- Tall glass vessel
- Spotlight Integrated Science pg. 158
- Tin can
- Water
- Brine (salt solution)
- Ruler
- Spotlight Integrated Science pg. 155
- Wooden block
- Basins with sand

- Practical assessment - Observation - Oral questions

Force and Energy

Determining pressure - Calculating pressure of regular solids
Determining pressure - Effect of weight on pressure

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

- Calculate pressure exerted by regular solids
- Measure dimensions and mass of wooden blocks
- Relate calculations to designing furniture and equipment

In groups, learners are guided to:
- Measure the dimensions of faces A, B and C of a wooden block
- Calculate the area of each face
- Measure mass and calculate weight and pressure

How do we calculate the pressure exerted by a solid object?

- Spotlight Integrated Science pg. 156
- Regular wooden block
- Weighing machine
- Ruler
- Spotlight Integrated Science pg. 157
- Wooden blocks

- Practical assessment - Written assignments - Oral questions

Force and Energy

Pressure calculations - Problems on solids
Pressure calculations - More problems on solids
Pressure formula in liquids - Derivation and calculations
Applications of pressure in solids - Cutting tools and tyres
Applications of pressure in liquids - Dams, submarines and project

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

- Solve numerical problems involving pressure in solids
- Apply the formula P = F/A correctly
- Connect calculations to real situations like standing on floors

- Derive the formula for pressure in liquids
- Apply the formula P = hρg to solve problems
- Relate the formula to water tanks and scuba diving

- Calculate pressure when force and area are given
- Solve problems involving learners standing on floors
- Work through examples with different surface areas
- Derive P = hρg from first principles
- Calculate pressure exerted by liquids at different depths
- Solve problems involving scuba divers and submarines

How do we solve problems involving pressure in solids?
What factors determine the pressure exerted by a liquid?

- Spotlight Integrated Science pg. 161
- Calculators
- Exercise books
- Spotlight Integrated Science pg. 162
- Charts
- Spotlight Integrated Science pg. 164
- Charts
- Calculators
- Spotlight Integrated Science pg. 167
- Cutting tools
- School bags
- Charts
- Spotlight Integrated Science pg. 169
- Pictures of dams and submarines
- Materials for hand washing equipment

- Written assignments - Oral questions - Problem-solving exercises
- Oral questions - Written assignments - Problem-solving exercises