Mixtures, Elements and Compounds

Classes of Fire - Fire triangle components

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

- Identify the three components of fire triangle
- Explain the role of each component in fire
- Recognise fire hazards at home and take preventive measures

- Discuss possible causes of fire in nature
- Study the fire triangle diagram (oxygen, heat, fuel)
- Discuss the role of each component in the spread of fire

What are the components of the fire triangle?

- Spotlight Integrated Science Learner's Book pg. 69
- Charts showing fire triangle
- Digital resources

- Oral questions - Written assignments - Observation

Mixtures, Elements and Compounds

Classes of Fire - Role of oxygen in combustion
Classes of Fire - Role of oxygen in spread of fire

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

- Explain the role of oxygen in combustion
- Demonstrate that fire needs oxygen to burn
- Apply knowledge to safety practices like not blocking ventilation

- Explain how oxygen supports spread of fire
- Describe conditions necessary for fire to continue burning
- Apply understanding to forest fire prevention and management

- Invert gas jar over lit candle and observe
- Compare with open-ended glass jar
- Discuss that combustion cannot take place without oxygen
- Study pictures of fire in the forest
- Discuss how fire spreads from one point to another
- Discuss the fire triangle and continuous combustion

Why does a candle go out when covered with a jar?
How does oxygen contribute to the spread of fire?

- Spotlight Integrated Science Learner's Book pg. 69
- Candles, gas jar
- Open-ended glass jar, lighter
- Spotlight Integrated Science Learner's Book pg. 70
- Pictures of forest fire
- Charts showing fire spread

- Practical assessment - Oral questions - Written tests
- Oral questions - Written assignments - Group discussions

Mixtures, Elements and Compounds

Classes of Fire - Class A fires

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

- Identify Class A fires and their causes
- Describe materials that cause Class A fires
- Recognise fire risks from wood and paper at home and school

- Discuss Class A fires caused by combustible solid materials
- Identify materials such as wood, paper and textiles
- Use digital devices to search for more information on Class A fires

What materials cause Class A fires?

- Spotlight Integrated Science Learner's Book pg. 71
- Charts showing classes of fire
- Digital resources

- Oral questions - Written assignments - Observation

Mixtures, Elements and Compounds

Classes of Fire - Class B fires
Classes of Fire - Class C and D fires

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

- Identify Class B fires and their causes
- Describe flammable liquids and gases that cause Class B fires
- Exercise caution when handling petrol and cooking gas at home

- Discuss Class B fires involving flammable liquids and gases
- Identify materials such as petrol, diesel, kerosene, alcohol, paint, methane and LPG
- Discuss places where Class B fires are likely to occur

What flammable materials cause Class B fires?

- Spotlight Integrated Science Learner's Book pg. 73
- Charts showing classes of fire
- Pictures of flammable materials
- Pictures of electrical appliances

- Oral questions - Written tests - Group discussions

Mixtures, Elements and Compounds

Classes of Fire - Class K fires

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

- Identify Class K fires and their causes
- Describe kitchen fire hazards involving cooking oil
- Practice safe cooking methods to prevent kitchen fires

- Discuss Class K fires involving cooking fat, grease and cooking oil
- Read and discuss the scenario about Mary's cooking accident
- Discuss why water should not be used on Class K fires

Why are cooking oil fires dangerous?

- Spotlight Integrated Science Learner's Book pg. 72
- Charts showing classes of fire
- Pictures of kitchen fires

- Oral questions - Written tests - Group discussions

Mixtures, Elements and Compounds

Classes of Fire - Control measures for Class A fires
Classes of Fire - Control measures for Class B fires

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

- Describe control measures for Class A fires
- Explain how water and fire blankets work
- Use water appropriately to put out small fires safely

- Describe control measures for Class B fires
- Explain how foam and carbon dioxide extinguishers work
- Know which extinguisher to use at petrol stations

- Discuss use of fire blankets to smother Class A fires
- Discuss how water lowers temperature to quench the flame
- Practice fire control measures with teacher's guidance
- Discuss use of foam and carbon dioxide fire extinguishers
- Explain how foam smothers fire and cuts oxygen supply
- Discuss why water should never be used on Class B fires

How do you control Class A fires?
Why shouldn't water be used on petrol fires?

- Spotlight Integrated Science Learner's Book pg. 73
- Fire blanket
- Water, fire bucket
- Spotlight Integrated Science Learner's Book pg. 73
- Fire extinguisher (for demonstration)
- Charts showing fire control

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

Mixtures, Elements and Compounds

Classes of Fire - Control measures for Class C and D fires

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

- Describe control measures for Class C and D fires
- Explain importance of switching off electricity before fighting electrical fires
- Use appropriate fire extinguishers for different fire types

- Discuss switching off electricity supply for Class C fires
- Discuss use of dry powder extinguisher or CO₂ extinguisher
- Discuss use of dry powder extinguisher and sand for Class D fires

What is the first step when controlling electrical fires?

- Spotlight Integrated Science Learner's Book pg. 73
- Fire extinguisher (for demonstration)
- Fire bucket with sand

- Oral questions - Written tests - Practical assessment

Mixtures, Elements and Compounds

Classes of Fire - Control measures for Class K fires

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

- Describe control measures for Class K fires
- Explain how wet chemical fire extinguisher works
- Apply safe practices when frying food at home

- Discuss use of wet chemical fire extinguisher for Class K fires
- Explain why water makes cooking oil fires worse
- Discuss safe cooking practices to prevent kitchen fires

How do you safely put out a cooking oil fire?

- Spotlight Integrated Science Learner's Book pg. 73
- Charts showing fire control
- Pictures of kitchen safety

- Oral questions - Written assignments - Group discussions

Mixtures, Elements and Compounds

Classes of Fire - Breaking the fire triangle

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

- Explain how to break the fire triangle to control fire
- Describe methods of removing heat, oxygen or fuel
- Apply fire triangle knowledge to emergency situations

- Discuss how to remove heat using water
- Discuss how to remove oxygen by smothering with sand or blanket
- Discuss how to remove fuel by creating fire breaks

How does breaking the fire triangle help control fire?

- Spotlight Integrated Science Learner's Book pg. 71
- Charts showing fire triangle
- Sand, blanket, water

- Oral questions - Written tests - Observation

Mixtures, Elements and Compounds

Classes of Fire - Practicing fire control measures
Classes of Fire - Dangers of fires in nature

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

- Practice using different fire control equipment
- Demonstrate safe fire control procedures
- Respond appropriately to small fire emergencies at home

- Describe dangers of fires to life and property
- Explain environmental impact of fires
- Take precautions to prevent fire accidents at home and school

- Practice putting out small fires using sand, water and blanket
- Demonstrate use of fire extinguisher (with teacher guidance)
- Complete rating scale for fire control practice
- Discuss dangers of fires to human life and property
- Discuss environmental destruction caused by fires
- Discuss economic losses from fire accidents

Can you safely use a fire extinguisher?
What are the dangers of uncontrolled fires?

- Spotlight Integrated Science Learner's Book pg. 74
- Fire extinguisher, fire blanket
- Sand bucket, water
- Spotlight Integrated Science Learner's Book pg. 71
- Pictures of fire damage
- Digital resources

- Practical assessment - Rating scale - Observation
- Oral questions - Written assignments - Group discussions

Mixtures, Elements and Compounds

Classes of Fire - Rights to safety information on flammable substances

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

- Identify warning signs for flammable substances
- Explain consumer rights to safety information
- Read and follow safety warnings on household chemicals

- Study pictures showing warning signs on flammable substances
- Discuss why warning signs are displayed publicly
- Identify the flammable symbol on chemical containers

Why are warning signs important on flammable substances?

- Spotlight Integrated Science Learner's Book pg. 76
- Chemical containers with labels
- Pictures of warning signs

- Oral questions - Written tests - Observation

Mixtures, Elements and Compounds

Classes of Fire - Creating awareness on flammable substances
Classes of Fire - Oxygen in respiration and medicine

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

- Create posters on fire safety
- Share fire safety information with others
- Promote fire safety awareness in the community

- Study the poster on flammable substances awareness
- Create posters with information on fire safety
- Display posters on school noticeboard

How can you create awareness about fire safety?

- Spotlight Integrated Science Learner's Book pg. 77
- Manila paper, markers
- Coloured pencils
- Spotlight Integrated Science Learner's Book pg. 78
- Pictures of oxygen use
- Digital resources

- Project assessment - Oral questions - Poster evaluation

Mixtures, Elements and Compounds

Classes of Fire - Oxygen in combustion and industry

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

- Explain the role of oxygen in combustion
- Describe industrial uses of oxygen
- Relate oxygen to cooking and vehicle engines

- Discuss role of oxygen in burning fuels for cooking and engines
- Discuss use of oxygen in welding (oxy-acetylene flame)
- Discuss use of oxygen in steel making industry

How is oxygen used in industries?

- Spotlight Integrated Science Learner's Book pg. 79
- Pictures of welding, engines
- Digital resources

- Oral questions - Written tests - Observation

Mixtures, Elements and Compounds

Classes of Fire - Preparing oxygen using hydrogen peroxide
Classes of Fire - Physical and chemical properties of oxygen

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

- Describe the laboratory preparation of oxygen using hydrogen peroxide
- Explain the role of manganese (IV) oxide as a catalyst
- Understand how catalysts speed up reactions in everyday products

- Describe physical properties of oxygen
- Demonstrate chemical properties of oxygen
- Test for oxygen using a glowing splint as done in laboratories

- Set up apparatus for preparing oxygen
- Add hydrogen peroxide drop-wise to manganese (IV) oxide
- Collect oxygen gas over water
- Test colour and smell of oxygen (colourless, odourless)
- Test solubility of oxygen in water (slightly soluble)
- Test effect of oxygen on glowing splint (relights)
- Burn elements in oxygen and observe

How is oxygen prepared in the laboratory?
What are the properties of oxygen gas?

- Spotlight Integrated Science Learner's Book pg. 62
- Flat-bottomed flask, delivery tube
- Hydrogen peroxide, manganese (IV) oxide
- Spotlight Integrated Science Learner's Book pg. 65
- Gas jars of oxygen
- Wooden splints, elements (sodium, magnesium)

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

Living Things and their Environment

The Cell - The light microscope
The Cell - Functions of microscope parts

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

- 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
- Spotlight Integrated Science Learner's Book Grade 8 pg. 84
- Function charts

- Observation - Oral questions - Drawing assessment

Living Things and their Environment

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:

- Demonstrate how to carry a light microscope correctly
- Explain proper cleaning procedures for microscope lenses
- Relate proper microscope care to preserving expensive laboratory equipment

- Practice carrying the microscope with one hand on the arm and another on the base
- Clean lenses using lens paper
- Discuss ways of caring for a light microscope
- Store microscope properly after use

How should we care for a light microscope to ensure its longevity?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 86
- Light microscope
- 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

- Practical demonstration - Observation checklist - Oral questions

Living Things and their Environment

The Cell - Observing plant cells
The Cell - Components of a plant cell

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

- 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

- Drawing assessment - Practical skills - Oral questions

Living Things and their Environment

The Cell - Observing animal cells
The Cell - Making animal cell models
The Cell - Functions of cell components

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

- Observe animal cells from permanent slides under a light microscope
- Draw and label components of an animal cell
- Relate animal cell study to understanding human body tissues

- 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

- Observe permanent slides of animal cells under light microscope
- Identify cell membrane, cytoplasm, and nucleus
- Draw well-labelled diagrams of animal cells
- Compare observations with reference materials
- 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 components make up an animal cell as seen under a light microscope?
What are the functions of the components of a cell?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 93
- Light microscope
- Permanent slides of animal cells
- Lens paper
- Charts
- Spotlight Integrated Science Learner's Book Grade 8 pg. 94
- Carton box
- Manila papers
- Pencil colours
- Scissors, glue, scalpel
- Spotlight Integrated Science Learner's Book Grade 8 pg. 95
- Digital devices
- Reference books
- Crossword puzzle worksheets

- Drawing assessment - Observation - Written questions
- Written assignments - Oral questions - Crossword completion

Living Things and their Environment

The Cell - Functions of vacuole and tonoplast

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

- 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

Why is the vacuole important in plant cells?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 96
- Plant cell diagrams
- Digital devices
- Reference materials

- Oral questions - Written assignments - Diagram labelling

Living Things and their Environment

The Cell - Similarities between plant and animal cells

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

- Identify similarities between plant and animal cells
- List components found in both cell types
- Recognise that all living things share common cellular features

- Compare models of plant and animal cells made earlier
- Use charts to identify common components
- List cell membrane, cytoplasm, and nucleus as shared components
- Discuss why both cells need these components

What do plant and animal cells have in common?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 97
- Plant and animal cell models
- Comparison charts
- Digital devices

- Oral questions - Written comparison - Group presentation

Living Things and their Environment

The Cell - Differences between plant and animal cells

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

- 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

- 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 do plant cells have structures that animal cells lack?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 98
- Comparison charts
- Reference books
- Digital devices

- Table completion - Oral presentation - Written test

Living Things and their Environment

The Cell - Meaning of magnification
The Cell - Calculating magnification

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

- Define the term magnification
- Explain how microscopes enlarge images of specimens
- Relate magnification to how doctors examine blood samples for malaria

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

- Study pictures showing original and magnified images
- Discuss the meaning of magnification
- Explain that magnification makes cells appear larger without changing physical size
- Use digital devices to watch videos on magnification
- 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

What is magnification and why is it important?
How do we calculate the total magnification of a microscope?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 99
- Magnification pictures
- Digital devices
- Light microscope
- Spotlight Integrated Science Learner's Book Grade 8 pg. 100
- Light microscope
- Exercise books
- Calculators

- Oral questions - Written definition - Observation
- Calculation exercises - Written test - Oral questions

Living Things and their Environment

The Cell - Solving magnification problems

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

- Solve numerical problems on magnification
- Determine objective lens magnification when total magnification is given
- Use problem-solving skills applicable in scientific research

- Calculate magnification power of objective lens given total magnification and eyepiece power
- Work through sample problems as a class
- Complete individual practice problems
- Check answers with peers

How can we determine unknown magnification values?

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

- Written problems - Peer marking - Teacher assessment

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

- 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

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

- 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

- End of topic test - Drawing assessment - Calculation test

Living Things and their Environment

Structure of the cell membrane
Properties of the cell membrane
Effects of heat on cell membrane - Potato experiment
Effects of heat on cell membrane - Beetroot experiment

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

- Describe the structure of the cell membrane
- Identify the components of a cell membrane
- Connect cell membrane structure to how skin protects the body

- Investigate the effect of heat on cell membrane using potato
- Compare responses of boiled and raw potato to sugar solution
- Connect heat damage to membranes with how cooking changes food texture

- Explore membranes made from soap solution
- Observe properties of soap bubbles as models of cell membranes
- Use digital devices to search for information on cell membrane structure
- Draw and label a diagram of the cell membrane
- Bore cylindrical holes in raw and boiled potatoes
- Add concentrated sugar solution to hollow chambers
- Place potatoes in petri dishes with water
- Observe and record changes after one hour

How does a cell membrane look like?
How does heat affect the cell membrane?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 104
- Liquid soap, water, sugar
- Straws, cotton thread
- Shallow tray
- 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

- Observation - Drawing assessment - Oral questions
- Practical report - Observation - Written questions

Living Things and their Environment

Effects of dilute acids and alkalis on cell membrane
Demonstrating diffusion using perfume

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

- Investigate effects of dilute acids and alkalis on cell membrane
- Relate concentration to amount of pigment released
- Connect to why strong cleaning chemicals damage skin

- Prepare test tubes with different concentrations of dilute HCl
- Add beetroot cores to each test tube
- Observe colour intensity after one hour
- Repeat experiment using dilute sodium hydroxide

How do acids and alkalis affect the cell membrane?

- 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

- Practical report - Observation - Written analysis

Living Things and their Environment

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:

- Explain the role of diffusion in gaseous exchange in humans
- Describe how oxygen and carbon dioxide move in the lungs
- Connect to why we breathe faster during exercise

- Read and discuss essay on diffusion in living things
- Study diagrams showing gaseous exchange in alveoli
- Explain how oxygen diffuses from alveoli into blood
- Discuss how carbon dioxide diffuses from blood to alveoli

How does diffusion help us breathe?

- 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

- Written notes - Diagram labelling - Oral questions

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

- 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

- Demonstrate osmosis using banana peel strips
- Explain why strips curve differently in different solutions
- Connect to why pickled vegetables shrink and fresh ones stay firm

- 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
- Prepare thin strips from raw green banana peel
- Place strips in distilled water and concentrated salt solution
- Observe curving direction after thirty minutes
- Explain why inner cells gain or lose water

What happens to plant cells in different solutions?
Why do banana peel strips curve in different directions?

- 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
- Distilled water
- Concentrated salt solution
- Beakers, scalpel

- Data recording - Measurement accuracy - Written analysis
- Practical observation - Drawing - Written explanation

Living Things and their Environment

Factors affecting osmosis

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

- 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

- Oral questions - Written notes - Group presentation

Living Things and their Environment

Role of osmosis in water absorption and stomata

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

- Explain the role of osmosis in water absorption by roots
- Describe how osmosis controls opening and closing of stomata
- Connect to why watering plants makes them stand upright

- Discuss how root hair cells absorb water from soil by osmosis
- Explain water distribution from cell to cell in plants
- Describe how guard cells control stomata through osmosis
- Complete table on roles of osmosis

How do plants use osmosis for survival?

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

- Table completion - Oral questions - Written notes

Living Things and their Environment

Role of osmosis in osmoregulation and plant support

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

- 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

How does osmosis help regulate water in living things?

- Spotlight Integrated Science Learner's Book Grade 8 pg. 125
- Young plants
- Digital devices
- Reference books

- Observation records - Written explanation - Oral questions

Living Things and their Environment

Importance of diffusion and osmosis
Introduction to the menstrual cycle
Phases of the menstrual cycle
Ovulation and luteal phase

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

- Explain the importance of diffusion and osmosis in living things
- Summarise how these processes support life
- Connect to everyday processes like breathing, eating, and plant growth

- Describe the phases of the menstrual cycle
- Explain what happens during menstruation phase
- Understand that cycle phases are natural body rhythms like sleep patterns

- Watch videos on gaseous exchange in human lungs
- Discuss importance of diffusion in breathing and nutrition
- Discuss importance of osmosis in water balance
- Complete assessment activity on the sub-strand
- Study diagrams showing phases of the menstrual cycle
- Discuss the menstruation phase (days 1-5)
- Explain the follicular phase and its characteristics
- Record notes on each phase

Why are diffusion and osmosis important for life?
What are the different phases of the menstrual cycle?

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

- Self-assessment - Written test - Oral presentation
- Diagram labelling - Written notes - Oral questions

Living Things and their Environment

Irregular periods and bleeding
Menstrual pain and discomfort

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

- Identify challenges related to the menstrual cycle
- Describe irregular periods and irregular bleeding
- Recognise when to seek medical advice for menstrual problems

- Search for information on challenges related to menstrual cycle
- Discuss causes of irregular periods
- Explain what irregular bleeding means
- Discuss when these conditions require medical attention

What challenges may occur during the menstrual cycle?

- Spotlight Integrated Science Learner's Book Grade 8
- Digital devices
- Reference books
- Health education materials
- Health education charts
- Reference materials

- Oral questions - Written notes - Group discussion

Living Things and their Environment

Managing menstrual cycle challenges
Menstrual hygiene management

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

- Develop a plan to manage challenges related to menstrual cycle
- List ways to relieve menstrual discomfort
- Apply self-care practices for personal health management

- Discuss management strategies for menstrual challenges
- Explain use of heat therapy and exercise for pain relief
- Discuss importance of proper nutrition and rest
- Create a personal management plan

How can menstrual cycle challenges be managed?

- Spotlight Integrated Science Learner's Book Grade 8
- Health education materials
- Digital devices
- Planning worksheets
- Sanitary products samples
- Digital devices

- Plan development - Oral presentation - Written notes