Living Things and their Environment

Movement of Materials In and Out of the Cell - Introduction to diffusion

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

- Define diffusion
- Explain the concept of diffusion
- Appreciate diffusion in daily life

- Discuss how food aromas spread
- Explain movement of aroma particles
- Define diffusion as movement from high to low concentration
- Relate diffusion to everyday experiences

What is diffusion and how does it occur?

Active integrated science 
- Examples from daily life
- Charts
- Digital resources

- Oral questions - Written assignments - Observation

Living Things and their Environment

Movement of Materials In and Out of the Cell - Demonstrating diffusion in gases

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

- Demonstrate diffusion in gases
- Observe diffusion occurring
- Show responsibility in handling perfumes safely

- Close classroom windows and doors
- Line up learners across the room
- Spray perfume at front
- Observe and record when each learner detects scent
- Dispose materials appropriately

How does diffusion occur in gases?

Active Integrated Science
- Perfume or scented substance
- Enclosed room
- Timer

- Observation - Oral questions - Practical assessment

Living Things and their Environment

Movement of Materials In and Out of the Cell - Explaining diffusion observations

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

- Explain observations from diffusion experiment
- Describe particle movement during diffusion
- Draw conclusions about diffusion

- Discuss observations from perfume experiment
- Explain how particles moved from high to low concentration
- Relate time to distance in diffusion
- Write conclusion on diffusion process

Why did different learners detect the perfume at different times?

-Active Integrated Science
- Observation records
- Notebooks
- Reference materials

- Written assignments - Oral explanations - Observation

Living Things and their Environment

Movement of Materials In and Out of the Cell - Demonstrating diffusion in plant materials

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

- Demonstrate diffusion using plant materials
- Observe ink movement in plants
- Show responsibility in handling materials safely

- Put water in container
- Add ink and stir
- Place young plant with roots in colored water
- Leave for two hours
- Cut stem and observe
- Dispose materials appropriately

How do plants absorb colored water?

-Active Integrated Science
- Young plant
- Ink
- Water
- Container
- Scalpel
- Gloves

- Practical assessment - Observation - Oral questions

Living Things and their Environment

Movement of Materials In and Out of the Cell - Explaining diffusion in plant cells

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

- Explain ink movement in plant cells
- Describe cell-to-cell diffusion
- Appreciate diffusion in plants

- Discuss observations from plant experiment
- Explain movement of ink from high to low concentration
- Describe cell-to-cell diffusion process
- Draw conclusions on diffusion in plants

How did ink reach all parts of the plant?

-Active Integrated Science 
- Observation records
- Diagrams
- Notebooks

- Written assignments - Oral explanations - Observation

Living Things and their Environment

Movement of Materials In and Out of the Cell - Role of diffusion in animals

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

- Explain gaseous exchange in lungs
- Describe absorption in intestines
- Appreciate diffusion in body functions

- Search for information on gaseous exchange in lungs
- Discuss oxygen and carbon dioxide diffusion
- Explain absorption of digested food
- Discuss excretion of metabolic wastes

How does diffusion help in breathing and digestion?

-Active Integrated Science
- Digital devices
- Charts
- Reference books
- Video resources

- Oral presentations - Written assignments - Observation

Living Things and their Environment

Movement of Materials In and Out of the Cell - Role of diffusion in plants
Movement of Materials In and Out of the Cell - Introduction to osmosis

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

- Explain mineral salt absorption by roots
- Describe gaseous exchange in plants
- Show interest in plant processes

- Discuss absorption of mineral salts from soil
- Explain carbon dioxide diffusion during photosynthesis
- Describe oxygen diffusion during respiration
- Discuss transport of manufactured food

How does diffusion help plants survive?

-Active Integrated Science
- Diagrams
- Charts
- Reference books
- Mentor Integrated Science pg. 67
- Reference materials

- Oral questions - Written tests - Observation

Living Things and their Environment

Movement of Materials In and Out of the Cell - Demonstrating osmosis using visking tubing

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

- Set up osmosis experiment
- Use visking tubing correctly
- Demonstrate safety when handling materials

- Cut and open visking tubing
- Fill with concentrated sugar solution
- Tie both ends tightly
- Immerse in distilled water
- Suspend using string and glass rod
- Leave undisturbed for 30 minutes

How can we demonstrate osmosis in the laboratory?

-Active Integrated Science 
- Visking tubing
- Sugar solution
- Distilled water
- Beakers
- String
- Glass rod

- Practical assessment - Observation - Oral questions

Living Things and their Environment

Movement of Materials In and Out of the Cell - Explaining osmosis observations

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

- Explain observations from osmosis experiment
- Describe water movement through membrane
- Draw conclusions about osmosis

- Remove visking tubing from water
- Measure new water volume in beaker
- Observe size of visking tubing
- Explain water movement from high to low concentration
- Draw conclusions on osmosis

What happened during the osmosis experiment?

- Active Integrated Science
- Observation records
- Diagrams
- Notebooks

- Written assignments - Oral explanations - Observation

Living Things and their Environment

Movement of Materials In and Out of the Cell - Demonstrating osmosis using plant materials

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

- Demonstrate osmosis using potato chips
- Set up experiment correctly
- Show responsibility in handling materials

- Peel and cut potato into chips
- Measure initial length of chips
- Place one chip in distilled water
- Place another in sugar solution
- Leave for 30 minutes
- Measure final lengths and record

How does osmosis occur in plant cells?

Active Integrated Science 
- Potato
- Distilled water
- Sugar solution
- Beakers
- Ruler
- Scalpel

- Practical assessment - Observation - Written records

Living Things and their Environment

Movement of Materials In and Out of the Cell - Explaining osmosis in plant cells

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

- Explain turgidity in plant cells
- Explain flaccidity in plant cells
- Appreciate osmosis in plants

- Discuss observations on potato chips
- Explain why chip in water became firm and turgid
- Explain why chip in sugar solution became soft
- Describe water movement by osmosis
- Draw conclusions

Why did the potato chips change differently?

Active Integrated Science 
- Observation records
- Diagrams
- Notebooks

- Written assignments - Oral explanations - Observation

Living Things and their Environment

Movement of Materials In and Out of the Cell - Role of osmosis in plants

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

- Explain water uptake by roots
- Describe stomata opening and closing
- Show interest in plant processes

- Search for information on osmosis in plants
- Discuss water uptake by root hairs
- Explain opening and closing of stomata
- Describe feeding in insectivorous plants
- Discuss support in herbaceous plants

How does osmosis help plants function?

-Active Integrated Science
- Digital devices
- Charts
- Reference books
- Diagrams

- Oral presentations - Written assignments - Observation

Living Things and their Environment

Movement of Materials In and Out of the Cell - Role of osmosis in animals

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

- Explain osmoregulation in kidneys
- Describe water absorption in intestines
- Appreciate osmosis in body functions

- Discuss water re-absorption in kidneys
- Explain absorption from intestines to blood
- Describe maintenance of cell shape and size
- Relate to aquatic animals

How does osmosis help our bodies function?

Active Integrated Science 
- Charts
- Diagrams
- Reference books

- Oral questions - Written tests - Observation

Living Things and their Environment
Force and Energy

Reproduction in Human Beings - Introduction to human reproduction
Transformation of Energy - Forms of energy in nature

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

- Recall parts of female reproductive system
- Explain importance of reproduction
- Show interest in reproduction studies

- Review physical changes in adolescent girls
- Name parts of female reproductive system
- Identify part that releases eggs
- Discuss egg release frequency
- Define reproduction

Why is reproduction important?

-Active Integrated Science 
- Charts
- Diagrams
- Reference books

- Digital devices
- Internet access
- Charts showing forms of energy

- Oral questions - Written assignments - Observation

Force and Energy

Transformation of Energy - Chemical energy
Transformation of Energy - Electrical energy

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

- Define chemical energy
- Identify sources of chemical energy
- Explain how chemical energy is released
- Show interest in learning about chemical energy

- Study pictures showing chemical energy sources
- Discuss the form of energy in each picture
- Identify chemical energy sources in the locality
- Share findings with classmates

How is chemical energy stored and released?

- Active integrated science 
- Pictures of fuels and foods
- Digital resources
- Digital devices
- Charts on electricity generation

- Observation - Oral questions - Class discussions

Force and Energy

Transformation of Energy - Light, sound and heat energy
Transformation of Energy - Atomic, potential and kinetic energy

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

- Define light, sound and heat energy
- Identify sources of light, sound and heat energy
- Explain how each form of energy is produced
- Show interest in studying different forms of energy

- Discuss light energy and its sources
- Explain sound energy production through vibration
- Discuss heat energy and how it flows
- Identify sources in the environment

How are light, sound and heat energy produced in nature?

-Active Integrated science 
- Light sources
- Sound producing objects
- Heat sources
- Digital devices
- Internet access
- Reference books

- Observation - Oral questions - Practical demonstrations

Force and Energy

Transformation of Energy - Gravitational energy
Transformation of Energy - Renewable and non-renewable sources

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

- Define gravitational energy
- Explain how gravitational energy holds objects on earth
- Relate gravitational energy to potential energy
- Show interest in understanding gravitational energy

- Discuss gravitational energy as a form of potential energy
- Explain how all objects on earth are held by gravitational energy
- Share findings with classmates

How does gravitational energy affect objects on earth?

- Active integrated science learners book 8
- Digital resources
- Reference books
- Digital devices
- Textbooks
- Internet access

- Observation - Oral questions - Class discussions

Force and Energy

Transformation of Energy - Identifying renewable sources
Transformation of Energy - Classifying energy sources

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

- Identify renewable sources of energy from pictures
- Explain why certain sources are renewable
- List renewable sources used in their locality
- Show responsibility in using renewable energy

- Study pictures showing renewable and non-renewable sources
- Discuss which sources are renewable and give reasons
- List renewable sources used locally
- Share ideas with classmates

Why are some energy sources considered renewable?

Active Integrated science book 8
- Pictures of energy sources
- Digital devices
- Flashcards
- Chart paper
- Markers

- Observation - Oral questions - Group discussions

Force and Energy

Transformation of Energy - Electrical to heat energy transformation

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

- Explain how electrical energy transforms to heat energy
- Name devices that convert electrical to heat energy
- Demonstrate the transformation process
- Show interest in energy transformation applications

- Discuss how electricity is used for heating in homes
- Name devices that convert electrical to heat energy
- Explain the transformation process
- Share findings with classmates

How does electrical energy change to heat energy?

Active Integrated science book 8 
- Pictures of heating devices
- Digital resources

- Observation - Oral questions - Class discussions

Force and Energy

Transformation of Energy - Practical: Electrical to heat energy

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

- Set up a circuit to demonstrate electrical to heat transformation
- Observe and record the transformation process
- Explain the role of resistance in heat production
- Practice safety when handling electrical circuits

- Connect dry cells, steel wool, and wires in a circuit
- Switch on and observe heating of steel wool
- Record observations
- Discuss the transformation process

What happens when electrical current flows through a resistor?

Active Integrated science bk 8
- Dry cells
- Cell holders
- Steel wool
- Connecting wires
- Switch
- Crocodile clips

- Observation - Practical assessment - Safety compliance

Force and Energy

Transformation of Energy - Chemical to electrical energy transformation

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

- Explain how chemical energy transforms to electrical energy
- Name devices that convert chemical to electrical energy
- Describe the process in cells and batteries
- Appreciate the use of cells and batteries

- Discuss chemical to electrical energy transformation
- Name devices that perform this conversion
- Explain how cells and batteries work
- Share findings in class

How do cells and batteries produce electrical energy?

Active Integrated science bk 8
- Cells and batteries
- Digital devices
- Reference books

- Observation - Oral questions - Written tests

Force and Energy

Transformation of Energy - Practical: Chemical to electrical energy

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

- Set up a circuit with cells to demonstrate energy transformation
- Observe and explain what happens when the circuit is closed
- Record observations systematically
- Show care when handling electrical components

- Connect cells, bulb, and switch in a circuit
- Close the switch and observe the bulb
- Open the switch and observe changes
- Record and discuss findings

What energy transformation occurs in a simple circuit?

- Active integrated science bk 8
- Dry cells
- Cell holders
- Bulb or LED
- Bulb holder
- Connecting wires
- Switch

- Observation - Practical assessment - Recording skills

Force and Energy

Transformation of Energy - Mechanical to electrical energy

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

- Define mechanical energy
- Explain how mechanical energy transforms to electrical energy
- Identify devices that perform this transformation
- Show interest in learning about generators

- Discuss mechanical energy and its forms
- Explain transformation in generators and dynamos
- Identify applications in daily life
- Share findings with classmates

How can motion be converted into electrical energy?

Active Integrated science bk 8 
- Pictures of generators and dynamos
- Digital resources

- Observation - Oral questions - Class discussions

Force and Energy

Transformation of Energy - Practical: Mechanical to electrical energy

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

- Demonstrate mechanical to electrical energy transformation using a dynamo
- Observe and explain the process
- Record observations
- Appreciate the practical applications of dynamos

- Connect bicycle dynamo to a bulb
- Rotate the bicycle wheel to turn the dynamo
- Observe the bulb lighting
- Stop rotation and observe changes
- Discuss findings

What happens when a dynamo is rotated?

Active Integrated science bk 8 
- Bicycle dynamo
- Bicycle wheel or means of rotating dynamo
- Bulb
- Connecting wires

- Observation - Practical assessment - Oral questions

Force and Energy

Transformation of Energy - Electrical to light energy

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

- Explain how electrical energy transforms to light energy
- Name devices that convert electrical to light energy
- Describe the process in bulbs and LEDs
- Appreciate the importance of lighting devices

- Discuss electrical to light transformation in bulbs
- Explain how charges heat the filament to produce light
- Name other devices that transform electrical to light energy
- Share findings with classmates

How do bulbs and LEDs produce light?

Active Integrated science bk 8 
- Pictures of bulbs and LEDs
- Digital resources

- Observation - Oral questions - Written assignments

Force and Energy

Transformation of Energy - Practical: Electrical to light energy

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

- Set up a circuit to demonstrate electrical to light transformation
- Observe and explain the process
- Record the energy transformation sequence
- Practice circuit safety

- Connect cell, bulb, and switch in a circuit
- Switch on and observe light production
- Switch off and observe changes
- Discuss observations with classmates

What energy transformations occur in a lighting circuit?

Active Integrated science bk 8 
- Cell
- Switch
- Bulb or LED
- Connecting wires
- Bulb holder
- Cell holder

- Observation - Practical assessment - Safety compliance

Force and Energy

Transformation of Energy - Applications: Transducers

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

- Define transducers
- Identify different types of transducers
- Explain how transducers apply energy transformation
- Appreciate the role of transducers in daily life

- Discuss devices that facilitate energy transformation
- Explain the working of electric bulbs, diodes, and LEDs
- Identify transducers in the environment
- Share findings with classmates

What role do transducers play in energy transformation?

Active Integrated science bk 8 
- Pictures of transducers
- Digital devices
- Reference books

- Observation - Oral questions - Class discussions

Force and Energy

Transformation of Energy - Applications: Microphones, heaters, and solar panels
Transformation of Energy - Applications: Motors, engines, and other devices

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

- Explain energy transformation in moving coil microphones
- Describe energy transformation in electric heaters
- Explain how solar panels work
- Show interest in renewable energy applications

- Discuss sound to electrical transformation in microphones
- Explain electrical to heat transformation in heaters
- Discuss light to electrical transformation in solar panels
- Identify applications in daily life

How do microphones, heaters, and solar panels transform energy?

Active Integrated science bk 8 
- Pictures of devices
- Digital resources
- Internet access
- Digital devices
- Reference books

- Observation - Oral questions - Written tests

Force and Energy

Transformation of Energy - Applications: Piezoelectricity and thermocouples

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

- Explain piezoelectricity and its applications
- Describe how thermocouples work
- Identify devices using these principles
- Appreciate modern energy transformation technologies

- Discuss mechanical to electrical transformation in piezoelectric materials
- Explain heat to electrical transformation in thermocouples
- Identify applications in technology
- Share findings with classmates

How can pressure and temperature differences produce electricity?

Active Integrated science bk 8 
- Digital devices
- Internet access
- Reference materials

- Observation - Oral questions - Written assignments

Force and Energy

Transformation of Energy - Energy transformation in falling objects

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

- Explain energy transformation in falling objects
- Describe the conversion from potential to kinetic energy
- Identify examples in daily life
- Show understanding of energy conservation

- Search for information on energy transformation in falling objects
- Discuss potential to kinetic energy conversion
- Explain energy transformation when objects hit the ground
- Share findings with classmates

What energy transformations occur when objects fall?

Active Integrated science bk 8 
- Digital devices
- Reference books
- Internet access

- Observation - Oral questions - Class discussions

Force and Energy

Transformation of Energy - Energy transformation in friction and burning

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

- Explain energy transformation when rubbing hands together
- Describe energy transformation in burning firewood
- Identify the forms of energy involved
- Appreciate practical applications of energy transformation

- Discuss mechanical to heat transformation through friction
- Explain chemical to heat and light transformation in combustion
- Identify applications in daily life
- Share findings with classmates

How is energy transformed through friction and combustion?

Active Integrated science bk 8 
- Digital resources
- Reference books

- Observation - Oral questions - Written tests

Force and Energy

Transformation of Energy - Dangers: Road accidents

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

- Explain energy transformation in road accidents
- Identify dangers of kinetic energy in moving vehicles
- Describe mitigation measures
- Show responsibility in road safety

- Discuss kinetic energy in moving cars
- Explain energy transformation during collisions
- Discuss mitigation measures (speed limits, traffic rules, safety belts)
- Share findings with classmates

What energy transformations occur during road accidents?

Active Integrated science bk 8 
- Pictures of road accidents
- Digital devices
- Reference materials

- Observation - Oral questions - Class discussions

Force and Energy

Transformation of Energy - Dangers: Kinetic to potential energy accidents

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

- Identify accidents caused by kinetic to potential energy transformation
- Explain how these accidents occur
- Describe mitigation measures
- Practice safety in daily activities

- Discuss accidents from falling, hitting objects, and being hit
- Explain mitigation measures
- Discuss use of protective gear
- Share safety practices

How can we prevent accidents involving energy transformation?

Active Integrated science bk 8 
- Digital resources
- Safety equipment pictures

- Observation - Oral questions - Written assignments

Force and Energy

Transformation of Energy - Dangers: Fire accidents

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

- Explain energy transformation in fire accidents
- Identify causes of fire accidents
- Describe mitigation measures
- Show responsibility in fire safety

- Discuss chemical to heat energy transformation in fires
- Explain causes of fire accidents
- Discuss mitigation measures (proper fuel storage, fire fighting equipment)
- Share safety practices

What causes fire accidents and how can they be prevented?

Active Integrated science bk 8 
- Pictures of fire accidents
- Fire safety equipment
- Digital resources

- Observation - Oral questions - Class discussions

Force and Energy

Transformation of Energy - Dangers: Electrical accidents

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

- Identify electrical accidents from energy transformation
- Explain how electrical accidents occur
- Describe mitigation measures
- Practice electrical safety

- Discuss energy transformation in electrical accidents
- Explain causes (overloading, misuse)
- Discuss mitigation measures
- Share safety practices

How can we prevent electrical accidents?

Active Integrated science bk 8 
- Pictures of electrical hazards
- Safety posters
- Digital resources

- Observation - Oral questions - Written tests

Force and Energy

Transformation of Energy - Dangers: Light and sound hazards

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

- Identify health hazards from bright light
- Explain health hazards from loud sound
- Describe mitigation measures for each
- Practice safety with light and sound

- Discuss health hazards from excessive light energy
- Explain health hazards from loud sound energy
- Discuss mitigation measures (protective glasses, earmuffs)
- Share safety practices

What are the health effects of excessive light and sound?

Active Integrated science bk 8 
- Pictures of protective gear
- Digital resources

- Observation - Oral questions - Class discussions

Force and Energy

Pressure - Meaning of pressure

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

- Define pressure in scientific terms
- Explain factors affecting pressure
- Identify examples of pressure in daily life
- Show interest in understanding pressure

- Brainstorm on the meaning of pressure
- Discuss why sharp knives cut easily
- Explain why sharp nails drive in easily
- Discuss pressure in inflating balloons

What is pressure and how does it work?

Active Integrated science bk 8 
- Fruits
- Knife
- Nails
- Balloons

- Observation - Oral questions - Written assignments

Force and Energy

Pressure - Pressure and surface area

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

- Explain the relationship between force and surface area
- Identify which objects exert more pressure
- Predict pressure based on surface area
- Appreciate the concept of pressure distribution

- Discuss wooden sticks with sharp and blunt tips
- Explain which is easier to drive into ground
- Relate force required to surface area
- Share findings with classmates

How does surface area affect pressure?

Active Integrated science bk 8 
- Wooden sticks
- Pictures
- Digital resources

- Observation - Oral questions - Class discussions

Force and Energy

Pressure - Practical: Pressure in solids

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

- Demonstrate pressure in solids using a knife and fruit
- Observe and record differences in pressure application
- Explain the relationship between force, area and pressure
- Practice safety when using cutting tools

- Place fruit on flat surface
- Try cutting with flat side of knife
- Try cutting with blunt edge
- Try cutting with sharp edge
- Record and discuss observations

What determines how easily a knife cuts?

Active Integrated science bk 8 
- Knife
- Fruit (banana)
- Chopping board

- Observation - Practical assessment - Safety compliance

Force and Energy

Pressure - Determining pressure in solids

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

- State the formula for calculating pressure
- Identify SI units for pressure, force and area
- Calculate pressure given force and area
- Show accuracy in calculations

- Learn the pressure formula
- Discuss SI units (N/m²)
- Work through example problems
- Practice calculations

How do we calculate pressure in solids?

Active Integrated science bk 8 
- Calculators
- Chart paper
- Markers

- Observation - Oral questions - Written tests

Force and Energy

Pressure - Practical: Determining pressure with blocks

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

- Measure mass and dimensions of a block
- Calculate force and area
- Determine pressure exerted by the block
- Record results systematically

- Measure mass of block using weighing balance
- Convert mass to force
- Measure length and width of base
- Calculate base area and pressure
- Record in table

How can we measure pressure experimentally?

Active Integrated science bk 8 
- Rectangular blocks
- Weighing balance
- Ruler

- Observation - Practical assessment - Recording skills

Force and Energy

Pressure - Effect of area on pressure
Pressure - Effect of weight on pressure

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

- Investigate how area affects pressure
- Compare pressure on different faces of a block
- Explain the inverse relationship between area and pressure
- Record and analyze data

- Rest block on different faces
- Calculate area for each face
- Calculate pressure for each position
- Compare results and draw conclusions

How does changing area affect pressure when force is constant?

Active Integrated science bk 8 
- Rectangular blocks
- Ruler
- Weighing balance
- Ink or paint
- Identical blocks (4)

- Observation - Practical assessment - Data analysis

Force and Energy

Pressure - Solving numerical problems

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

- Apply the pressure formula to solve problems
- Convert units appropriately
- Calculate force, area or pressure as required
- Show accuracy in problem solving

- Work through example problems
- Practice converting units
- Solve problems on pressure, force and area
- Check answers with peers

How do we solve pressure problems accurately?

Active Integrated science bk 8 
- Calculators
- Exercise books
- Reference books

- Observation - Oral questions - Written tests

Force and Energy

Pressure - Pressure in liquids: Effect of depth

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

- Demonstrate that pressure in liquids increases with depth
- Observe and explain water jets from holes at different depths
- Relate depth to pressure
- Show care when handling water

- Heat nail and make holes at different heights in bottle
- Fill bottle with water
- Observe jets from different holes
- Compare distances of jets

How does depth affect pressure in liquids?

Active Integrated science bk 8 
- Plastic bottle
- Nail
- Heat source
- Water
- Basin

- Observation - Practical assessment - Oral questions

Force and Energy

Pressure - Distribution of pressure in liquids

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

- Demonstrate pressure distribution at same level in liquids
- Observe water jets from horizontal holes
- Explain equal pressure at same level
- Appreciate properties of liquids

- Make holes horizontally at same level in bottle
- Fill bottle with water
- Observe jets from holes
- Discuss equal distances of jets

How is pressure distributed at the same level in liquids?

Active Integrated science bk 8 
- Plastic bottle
- Nail
- Heat source
- Water
- Basin

- Observation - Practical assessment - Class discussions

Force and Energy

Pressure - Applications: High-heeled shoes and cutting tools

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

- Explain pressure application in high-heeled shoes
- Describe pressure application in cutting tools
- Identify how pressure principles are used
- Appreciate practical applications of pressure

- Discuss how heels concentrate pressure
- Explain how sharp edges concentrate pressure for cutting
- Identify other cutting tools
- Share findings with classmates

How is pressure applied in shoes and cutting tools?

Active Integrated science bk 8 
- Pictures of shoes and tools
- Digital resources

- Observation - Oral questions - Written assignments

Force and Energy

Pressure - Applications: Brakes, siphons, pumps, and straws

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

- Explain pressure in car brakes
- Describe how siphons work using pressure
- Explain pressure in bicycle pumps and drinking straws
- Appreciate diverse applications of pressure

- Discuss pressure application in car braking systems
- Explain siphon operation using pressure differences
- Describe pump operation
- Explain straw operation using atmospheric pressure

How is pressure applied in various devices?

Active Integrated science bk 8 
- Pictures of devices
- Digital resources
- Reference books

- Observation - Oral questions - Class discussions

Force and Energy

Pressure - Applications: Overhead tanks and heavy vehicles

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

- Explain why water tanks are placed overhead
- Describe pressure advantages of elevated tanks
- Explain why heavy vehicles have many wheels
- Appreciate pressure distribution principles

- Discuss overhead tank placement and water pressure
- Explain pressure distribution in heavy vehicles
- Identify applications in the community
- Share findings with classmates

Why are water tanks elevated and heavy vehicles have many wheels?

Active Integrated science bk 8 
- Pictures of tanks and vehicles
- Digital devices

- Observation - Oral questions - Written tests

GENERAL ASSESSMENT,MARKING, COMPILING, REPORTING AND CLOSING