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| WK | LSN | STRAND | SUB-STRAND | LESSON LEARNING OUTCOMES | LEARNING EXPERIENCES | KEY INQUIRY QUESTIONS | LEARNING RESOURCES | ASSESSMENT METHODS | REFLECTION |
|---|---|---|---|---|---|---|---|---|---|
| 2 | 1 |
Living Things and the Environment
|
The Cell
- Importance of a light microscope
|
By the end of the
lesson, the learner
should be able to:
- Explain the importance of the light microscope in studying living things - Describe the historical development of the microscope - Show interest in learning about microscopes |
In groups, learners are guided to:
- Discuss what all living things have in common and how they differ - Search the Internet or print materials for information on the historical development of the microscope - Discuss the importance of the light microscope in studying cells |
How has the microscope helped in the study of living things?
|
- KLB Bk 8 pg. 82
- Digital resources - Internet access - Reference books |
- Observation
- Oral questions
- Written assignments
|
|
| 2 | 2-3 |
Living Things and the Environment
|
The Cell
- Parts of a light microscope
The Cell - Functions of the parts of a light microscope The Cell - Care for a light microscope |
By the end of the
lesson, the learner
should be able to:
- Identify the parts of a light microscope - Label the parts of a light microscope correctly - Appreciate the importance of each part of the microscope - Demonstrate proper care for the microscope - Practice correct handling and storage of the microscope - Appreciate the need to care for the microscope |
In groups, learners are guided to:
- Observe the provided microscope and identify its parts - Compare findings with those of other groups - Make a drawing of the light microscope and label the parts - Reflect on what was learnt in grade 7 about caring for a microscope - Role play how to care for the microscope under different scenarios - Demonstrate proper carrying, placement, and cleaning techniques |
What are the main parts of a light microscope?
How should we care for a light microscope? |
- KLB Bk 8 pg. 84
- A light microscope - Labelled wall chart of a light microscope - KLB Bk 8 pg. 85 - Prepared slide - KLB Bk 8 pg. 86 - A light microscope - Soft tissue paper - Soft cloth |
- Observation
- Practical assessment
- Written tests
- Observation - Practical assessment - Peer assessment |
|
| 2 | 4 |
Living Things and the Environment
|
The Cell
- Using a light microscope
|
By the end of the
lesson, the learner
should be able to:
- Use a light microscope correctly - Focus a specimen under different magnifications - Show confidence in using the microscope |
In groups, learners are guided to:
- Place the microscope on the bench correctly - Adjust the low power objective lens and diaphragm - Practice focusing using coarse and fine adjustment knobs - Observe specimens under different magnifications |
How do we use a light microscope correctly?
|
- KLB Bk 8 pg. 87
- Light microscope - Prepared slides |
- Observation
- Practical assessment
- Oral questions
|
|
| 2 | 5 |
Living Things and the Environment
|
The Cell
- Plant cells as seen under the light microscope
|
By the end of the
lesson, the learner
should be able to:
- Prepare temporary slides of plant cells - Observe plant cells under the microscope - Appreciate the structure of plant cells |
In groups, learners are guided to:
- Prepare temporary slides of onion epidermal cells - Mount and observe the cells under the microscope - Draw and label observed plant cells |
What structures can be seen in plant cells?
|
- KLB Bk 8 pg. 89
- Fresh onion bulb - Microscope slides and cover slips - Iodine solution - Microscope |
- Observation
- Practical assessment
- Drawing assessment
|
|
| 3 | 1 |
Living Things and the Environment
|
The Cell
- Observing epidermal cells of other plants
|
By the end of the
lesson, the learner
should be able to:
- Prepare slides from different plant tissues - Identify similarities in plant cells - Show interest in observing different plant cells |
In groups, learners are guided to:
- Obtain epidermis from fleshy leaves of different plants - Stain and observe cells under the microscope - Compare observations from different plant species |
Are all plant cells similar in structure?
|
- KLB Bk 8 pg. 91
- Fleshy leaves (Tradescantia, Zebrina, sisal) - Scalpel - Stains (iodine, methylene blue) - Microscope |
- Observation
- Practical assessment
- Oral questions
|
|
| 3 | 2-3 |
Living Things and the Environment
|
The Cell
- Structure of plant cells
The Cell - Animal cells observed under permanent slides The Cell - Key features of animal cells |
By the end of the
lesson, the learner
should be able to:
- Describe the shape and size of plant cells - Identify cell structures visible under the microscope - Appreciate the organization of plant cells - Describe the shape and boundaries of animal cells - Identify structures inside animal cells - Appreciate the structure of animal cells |
In groups, learners are guided to:
- Discuss the structure of plant cells based on observations - Describe cell shape, size, and visible structures - Draw and label a generalized plant cell - Discuss the structure of animal cells based on observations - Describe cell shapes, boundaries, and internal structures - Summarize findings in a table |
What are the main structures of plant cells?
What are the main features of animal cells? |
- KLB Bk 8 pg. 93
- Drawings from previous lessons - Charts of plant cells - Reference materials - KLB Bk 8 pg. 94 - Permanent slides of animal tissues - Light microscope - KLB Bk 8 pg. 96 - Information from previous observations - Reference materials - Charts |
- Observation
- Written tests
- Drawing assessment
- Observation - Written tests - Oral questions |
|
| 3 | 4 |
Living Things and the Environment
|
The Cell
- Key features of animal cells
|
By the end of the
lesson, the learner
should be able to:
- Describe the shape and boundaries of animal cells - Identify structures inside animal cells - Appreciate the structure of animal cells |
In groups, learners are guided to:
- Discuss the structure of animal cells based on observations - Describe cell shapes, boundaries, and internal structures - Summarize findings in a table |
What are the main features of animal cells?
|
- KLB Bk 8 pg. 96
- Information from previous observations - Reference materials - Charts |
- Observation
- Written tests
- Oral questions
|
|
| 3 | 5 |
Living Things and the Environment
|
The Cell
- Functions of cell components
|
By the end of the
lesson, the learner
should be able to:
- Explain the functions of cell organelles - Relate structure to function in cells - Show interest in understanding cell functions |
In groups, learners are guided to:
- Search the Internet and reference books for functions of cell organelles - Watch videos or animations on cell organelle functions - Record findings in a table |
What do different cell organelles do?
|
- KLB Bk 8 pg. 96
- Internet access - Reference books - Digital devices |
- Observation
- Written assignments
- Oral presentations
|
|
| 4 | 1 |
Living Things and the Environment
|
The Cell
- Comparison between plant and animal cells
|
By the end of the
lesson, the learner
should be able to:
- Compare plant and animal cells - Identify differences between plant and animal cells - Appreciate the diversity in cell structure |
In groups, learners are guided to:
- Discuss and compare plant and animal cells - Use guiding questions to identify similarities and differences - Summarize findings in a comparison table |
How do plant cells differ from animal cells?
|
- KLB Bk 8 pg. 98
- Notes and drawings from previous lessons - Comparison charts |
- Observation
- Written tests
- Table completion
|
|
| 4 | 2-3 |
Living Things and the Environment
|
The Cell
- Comparison between plant and animal cells
The Cell - Calculating magnification |
By the end of the
lesson, the learner
should be able to:
- Compare plant and animal cells - Identify differences between plant and animal cells - Appreciate the diversity in cell structure - Calculate magnification of a microscope - Determine total magnification at different objective lenses - Show interest in calculating magnification |
In groups, learners are guided to:
- Discuss and compare plant and animal cells - Use guiding questions to identify similarities and differences - Summarize findings in a comparison table - Discuss the meaning and importance of magnification - Learn the formula for calculating magnification - Calculate magnification using different lens combinations |
How do plant cells differ from animal cells?
How do we calculate magnification? |
- KLB Bk 8 pg. 98
- Notes and drawings from previous lessons - Comparison charts - KLB Bk 8 pg. 99 - Light microscope - Calculator - Reference books |
- Observation
- Written tests
- Table completion
- Observation - Written tests - Problem-solving exercises |
|
| 4 | 4 |
Living Things and the Environment
|
The Cell
- Calculating magnification
|
By the end of the
lesson, the learner
should be able to:
- Calculate magnification of a microscope - Determine total magnification at different objective lenses - Show interest in calculating magnification |
In groups, learners are guided to:
- Discuss the meaning and importance of magnification - Learn the formula for calculating magnification - Calculate magnification using different lens combinations |
How do we calculate magnification?
|
- KLB Bk 8 pg. 99
- Light microscope - Calculator - Reference books |
- Observation
- Written tests
- Problem-solving exercises
|
|
| 4 | 5 |
Living Things and the Environment
|
The Cell
- Determining magnification of cells
|
By the end of the
lesson, the learner
should be able to:
- Determine magnification of observed cells - Count cells in the field of view - Appreciate how magnification affects observation |
In groups, learners are guided to:
- Mount permanent slides and observe under different magnifications - Record eyepiece and objective lens strengths - Count cells across the field of view and calculate magnification |
How does magnification affect what we see?
|
- KLB Bk 8 pg. 101
- Light microscope - Permanent slides - Recording materials |
- Observation
- Practical assessment
- Calculation tests
|
|
| 5 | 1 |
Living Things and the Environment
|
The Cell
- Effects of magnification on cell observation
|
By the end of the
lesson, the learner
should be able to:
- Explain how magnification changes cell appearance - Relate magnification to detail visibility - Show appreciation for the role of magnification |
In groups, learners are guided to:
- Observe how the number of cells changes with magnification - Discuss how cell details become clearer with higher magnification - Record observations at different magnifications |
Why is magnification important in microscopy?
|
- KLB Bk 8 pg. 102
- Light microscope - Prepared slides - Observation charts |
- Observation
- Oral questions
- Written reports
|
|
| 5 | 2-3 |
Living Things and the Environment
|
The Cell
- Effects of magnification on cell observation
The Cell - Field visit to health centre or research institution |
By the end of the
lesson, the learner
should be able to:
- Explain how magnification changes cell appearance - Relate magnification to detail visibility - Show appreciation for the role of magnification - Identify applications of microscopy in real settings - Understand career opportunities in microscopy - Appreciate the practical use of microscopes |
In groups, learners are guided to:
- Observe how the number of cells changes with magnification - Discuss how cell details become clearer with higher magnification - Record observations at different magnifications - Visit a health centre or research institution - Use questionnaires to gather information - Observe different types of microscopes in use - Interview personnel about their work |
Why is magnification important in microscopy?
How are microscopes used in professional settings? |
- KLB Bk 8 pg. 102
- Light microscope - Prepared slides - Observation charts - KLB Bk 8 pg. 103 - Questionnaires - Notebooks - Transport |
- Observation
- Oral questions
- Written reports
- Observation - Report writing - Oral presentations |
|
| 5 | 4 |
Living Things and the Environment
|
The Cell
- Field visit to health centre or research institution
|
By the end of the
lesson, the learner
should be able to:
- Identify applications of microscopy in real settings - Understand career opportunities in microscopy - Appreciate the practical use of microscopes |
In groups, learners are guided to:
- Visit a health centre or research institution - Use questionnaires to gather information - Observe different types of microscopes in use - Interview personnel about their work |
How are microscopes used in professional settings?
|
- KLB Bk 8 pg. 103
- Questionnaires - Notebooks - Transport |
- Observation
- Report writing
- Oral presentations
|
|
| 5 | 5 |
Living Things and the Environment
|
The Cell
- Cell modeling project
|
By the end of the
lesson, the learner
should be able to:
- Create models of plant and animal cells - Demonstrate understanding through practical work - Appreciate cell structure through modeling |
In groups, learners are guided to:
- Make pencil outlines of plant and animal cells on cardboards - Use plasticine to mould cell structures - Display finished models for peer assessment |
How can we represent cell structures through models?
|
- KLB Bk 8 pg. 95
- Cardboards - Plasticine - Colored paints |
- Practical assessment
- Peer evaluation
- Model quality
|
|
| 6 | 1 |
Living Things and the Environment
|
The Cell
- Presentations and feedback on cell projects
|
By the end of the
lesson, the learner
should be able to:
- Present their cell models to peers - Provide constructive feedback - Appreciate different approaches to modeling |
In groups, learners are guided to:
- Present completed cell models to the class - Explain the structures and their functions - Receive and give constructive feedback |
How well do our models represent actual cells?
|
- Student models
- Presentation materials - Evaluation rubrics |
- Oral presentations
- Peer assessment
- Self-reflection
|
|
| 6 | 2-3 |
Living Things and the Environment
|
The Cell
- Presentations and feedback on cell projects
The Cell - Summary and enrichment activities |
By the end of the
lesson, the learner
should be able to:
- Present their cell models to peers - Provide constructive feedback - Appreciate different approaches to modeling - Summarize key concepts about cells - Apply knowledge to new situations - Show mastery of cell concepts |
In groups, learners are guided to:
- Present completed cell models to the class - Explain the structures and their functions - Receive and give constructive feedback - Review all sub-topics on the cell - Conduct research on limitations of light microscopes - Share findings with the class |
How well do our models represent actual cells?
What are the key things we've learned about cells? |
- Student models
- Presentation materials - Evaluation rubrics - KLB Bk 8 pg. 94 - Digital devices - Reference materials - Research resources |
- Oral presentations
- Peer assessment
- Self-reflection
- Observation - Research reports - Oral presentations |
|
| 6 | 4 |
Living Things and the Environment
|
The Cell
- Summary and enrichment activities
|
By the end of the
lesson, the learner
should be able to:
- Summarize key concepts about cells - Apply knowledge to new situations - Show mastery of cell concepts |
In groups, learners are guided to:
- Review all sub-topics on the cell - Conduct research on limitations of light microscopes - Share findings with the class |
What are the key things we've learned about cells?
|
- KLB Bk 8 pg. 94
- Digital devices - Reference materials - Research resources |
- Observation
- Research reports
- Oral presentations
|
|
| 6 | 5 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Structure of the cell membrane
|
By the end of the
lesson, the learner
should be able to:
- Describe the structure of the cell membrane - Identify major components of the cell membrane - Show interest in learning about the cell membrane |
In groups, learners are guided to:
- Search the Internet and watch animations on cell membrane structure - Compare observed structures with those in charts - Draw and label the structure of the cell membrane |
What is the structure of the cell membrane?
|
- KLB Bk 8 pg. 105
- Internet access - Charts showing cell membrane structure - Digital devices |
- Observation
- Drawing assessment
- Written tests
|
|
| 7 | 1 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Properties of the cell membrane
|
By the end of the
lesson, the learner
should be able to:
- Describe properties of the cell membrane - Explain semi-permeability - Appreciate the functions of the cell membrane |
In groups, learners are guided to:
- Research properties of the cell membrane - Discuss how each property relates to cell membrane parts - Record findings and share with class |
What properties does the cell membrane have?
|
- KLB Bk 8 pg. 107
- Internet access - Reference books - Digital devices |
- Observation
- Oral questions
- Written assignments
|
|
| 7 | 2-3 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Properties of the cell membrane
Movement of Materials In and Out of the Cell - Semi-permeability demonstration using visking tubing |
By the end of the
lesson, the learner
should be able to:
- Describe properties of the cell membrane - Explain semi-permeability - Appreciate the functions of the cell membrane - Demonstrate semi-permeability using visking tubing - Explain observations from the experiment - Show understanding of selective permeability |
In groups, learners are guided to:
- Research properties of the cell membrane - Discuss how each property relates to cell membrane parts - Record findings and share with class - Prepare visking tubing with starch solution - Immerse in iodine solution - Observe and record color changes - Explain the movement of molecules |
What properties does the cell membrane have?
How does semi-permeability work? |
- KLB Bk 8 pg. 107
- Internet access - Reference books - Digital devices - KLB Bk 8 pg. 108 - Visking tubing - Starch solution - Iodine solution - Beakers - Thread |
- Observation
- Oral questions
- Written assignments
- Observation - Practical assessment - Written reports |
|
| 7 | 4 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Semi-permeability demonstration using visking tubing
|
By the end of the
lesson, the learner
should be able to:
- Demonstrate semi-permeability using visking tubing - Explain observations from the experiment - Show understanding of selective permeability |
In groups, learners are guided to:
- Prepare visking tubing with starch solution - Immerse in iodine solution - Observe and record color changes - Explain the movement of molecules |
How does semi-permeability work?
|
- KLB Bk 8 pg. 108
- Visking tubing - Starch solution - Iodine solution - Beakers - Thread |
- Observation
- Practical assessment
- Written reports
|
|
| 7 | 5 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Effect of heat on the cell membrane
|
By the end of the
lesson, the learner
should be able to:
- Demonstrate the effect of heat on cell membranes - Explain how temperature affects membrane properties - Appreciate the sensitivity of cell membranes |
In groups, learners are guided to:
- Heat treat beetroot cylinders at different temperatures - Place treated cylinders in distilled water - Observe and record color changes - Discuss the effect of heat on membrane structure |
How does heat affect the cell membrane?
|
- KLB Bk 8 pg. 110
- Fresh beetroot - Cork borer - Test tubes - Water bath - Thermometer |
- Observation
- Practical assessment
- Oral questions
|
|
| 8 | 1 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Effect of pH on the cell membrane
|
By the end of the
lesson, the learner
should be able to:
- Demonstrate the effect of pH on cell membranes - Explain how acids and alkalis affect membranes - Show understanding of membrane sensitivity |
In groups, learners are guided to:
- Treat beetroot cylinders with dilute acid and alkali - Transfer to distilled water and observe - Record observations and discuss findings |
How do acids and alkalis affect the cell membrane?
|
- KLB Bk 8 pg. 112
- Fresh beetroot - Dilute HCl - Dilute NaOH - Test tubes - Distilled water |
- Observation
- Practical assessment
- Written tests
|
|
| 8 | 2-3 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Effect of pH on the cell membrane
Movement of Materials In and Out of the Cell - Introduction to diffusion |
By the end of the
lesson, the learner
should be able to:
- Demonstrate the effect of pH on cell membranes - Explain how acids and alkalis affect membranes - Show understanding of membrane sensitivity - Define diffusion - Explain the process of diffusion - Appreciate the importance of diffusion |
In groups, learners are guided to:
- Treat beetroot cylinders with dilute acid and alkali - Transfer to distilled water and observe - Record observations and discuss findings - Discuss the movement of particles in gases and liquids - Learn the definition of diffusion - Discuss examples of diffusion in everyday life |
How do acids and alkalis affect the cell membrane?
What is diffusion? |
- KLB Bk 8 pg. 112
- Fresh beetroot - Dilute HCl - Dilute NaOH - Test tubes - Distilled water - KLB Bk 8 pg. 113 - Reference materials - Charts - Digital resources |
- Observation
- Practical assessment
- Written tests
- Observation - Oral questions - Written tests |
|
| 8 |
Midterm |
||||||||
| 8 | 4 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Demonstrating diffusion in gas medium
|
By the end of the
lesson, the learner
should be able to:
- Demonstrate diffusion in gases - Observe the movement of gas molecules - Show interest in studying diffusion |
In groups, learners are guided to:
- Release perfume in the classroom - Record time taken for scent to reach different positions - Discuss observations |
How does diffusion occur in gases?
|
- KLB Bk 8 pg. 114
- Perfume - Stopwatch - Blindfolding material |
- Observation
- Practical assessment
- Data recording
|
|
| 8 | 5 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Diffusion of ammonia gas
|
By the end of the
lesson, the learner
should be able to:
- Demonstrate diffusion using ammonia gas - Explain the movement of gas molecules - Appreciate diffusion in gas medium |
In groups, learners are guided to:
- Set up glass tube with ammonia-soaked cotton wool - Place moistened red litmus papers at intervals - Observe color changes and discuss findings |
How can we demonstrate diffusion of gases?
|
- KLB Bk 8 pg. 115
- Wide glass tube - Concentrated ammonia - Red litmus papers - Cotton wool - Rubber bungs |
- Observation
- Practical assessment
- Oral questions
|
|
| 9 | 1 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Gaseous exchange in human lungs
|
By the end of the
lesson, the learner
should be able to:
- Describe gaseous exchange in the lungs - Explain the role of diffusion in respiration - Show understanding of respiratory processes |
In groups, learners are guided to:
- Search the Internet for animations on gaseous exchange - Discuss diffusion of oxygen and carbon dioxide - Draw diagrams showing gas movement in alveoli |
How does diffusion occur in the lungs?
|
- KLB Bk 8 pg. 116
- Internet access - Charts showing alveoli - Reference materials |
- Observation
- Drawing assessment
- Oral questions
|
|
| 9 | 2-3 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Gaseous exchange in human lungs
Movement of Materials In and Out of the Cell - Factors affecting rate of diffusion: surface area |
By the end of the
lesson, the learner
should be able to:
- Describe gaseous exchange in the lungs - Explain the role of diffusion in respiration - Show understanding of respiratory processes - Investigate the effect of surface area on diffusion - Explain surface area to volume ratio - Appreciate factors affecting diffusion |
In groups, learners are guided to:
- Search the Internet for animations on gaseous exchange - Discuss diffusion of oxygen and carbon dioxide - Draw diagrams showing gas movement in alveoli - Cut potato cubes of different sizes - Immerse in iodine solution - Measure stained and unstained areas - Calculate surface area to volume ratios |
How does diffusion occur in the lungs?
How does surface area affect diffusion rate? |
- KLB Bk 8 pg. 116
- Internet access - Charts showing alveoli - Reference materials - KLB Bk 8 pg. 117 - Irish potato - Iodine solution - Scalpel - Ruler - Beaker |
- Observation
- Drawing assessment
- Oral questions
- Observation - Practical assessment - Calculation tests |
|
| 9 | 4 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Factors affecting diffusion: molecular size
|
By the end of the
lesson, the learner
should be able to:
- Compare diffusion rates of different gases - Explain how molecular size affects diffusion - Show understanding of diffusion factors |
In groups, learners are guided to:
- Set up glass tube with ammonia and HCl at opposite ends - Observe formation of white substance - Discuss why it forms away from the center |
How does molecular size affect diffusion rate?
|
- KLB Bk 8 pg. 119
- Glass tube - Concentrated ammonia - Concentrated HCl - Cotton wool - Rubber bungs - Gloves |
- Observation
- Practical assessment
- Written reports
|
|
| 9 | 5 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Factors affecting diffusion: molecular size
|
By the end of the
lesson, the learner
should be able to:
- Compare diffusion rates of different gases - Explain how molecular size affects diffusion - Show understanding of diffusion factors |
In groups, learners are guided to:
- Set up glass tube with ammonia and HCl at opposite ends - Observe formation of white substance - Discuss why it forms away from the center |
How does molecular size affect diffusion rate?
|
- KLB Bk 8 pg. 119
- Glass tube - Concentrated ammonia - Concentrated HCl - Cotton wool - Rubber bungs - Gloves |
- Observation
- Practical assessment
- Written reports
|
|
| 10 | 1 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Other factors affecting diffusion
|
By the end of the
lesson, the learner
should be able to:
- Identify other factors affecting diffusion - Explain how temperature and concentration affect diffusion - Appreciate the complexity of diffusion |
In groups, learners are guided to:
- Research factors affecting diffusion rate - Discuss diffusion gradient, temperature, thickness of tissues - Record findings and share with class |
What other factors affect the rate of diffusion?
|
- KLB Bk 8 pg. 121
- Internet access - Reference books - Charts |
- Observation
- Written assignments
- Oral presentations
|
|
| 10 | 2-3 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Other factors affecting diffusion
Movement of Materials In and Out of the Cell - Role of diffusion in living things |
By the end of the
lesson, the learner
should be able to:
- Identify other factors affecting diffusion - Explain how temperature and concentration affect diffusion - Appreciate the complexity of diffusion - Describe roles of diffusion in living organisms - Explain absorption and gaseous exchange - Show appreciation for the importance of diffusion |
In groups, learners are guided to:
- Research factors affecting diffusion rate - Discuss diffusion gradient, temperature, thickness of tissues - Record findings and share with class - Search for information on roles of diffusion - Discuss absorption of nutrients and gases - Discuss pollination and food transport in plants |
What other factors affect the rate of diffusion?
Why is diffusion important in living things? |
- KLB Bk 8 pg. 121
- Internet access - Reference books - Charts - KLB Bk 8 pg. 122 - Internet access - Reference books - Charts - Digital devices |
- Observation
- Written assignments
- Oral presentations
- Observation - Written tests - Oral questions |
|
| 10 | 4 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Introduction to osmosis
|
By the end of the
lesson, the learner
should be able to:
- Define osmosis - Explain the process of osmosis - Appreciate osmosis as a special type of diffusion |
In groups, learners are guided to:
- Discuss osmosis as diffusion of water molecules - Learn the definition of osmosis - Study illustrations of water movement through membranes |
What is osmosis?
|
- KLB Bk 8 pg. 124
- Charts - Reference materials - Digital resources |
- Observation
- Oral questions
- Written tests
|
|
| 10 | 5 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Introduction to osmosis
|
By the end of the
lesson, the learner
should be able to:
- Define osmosis - Explain the process of osmosis - Appreciate osmosis as a special type of diffusion |
In groups, learners are guided to:
- Discuss osmosis as diffusion of water molecules - Learn the definition of osmosis - Study illustrations of water movement through membranes |
What is osmosis?
|
- KLB Bk 8 pg. 124
- Charts - Reference materials - Digital resources |
- Observation
- Oral questions
- Written tests
|
|
| 11 | 1 |
Living Things and the 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:
- Demonstrate osmosis using visking tubing - Explain observations from the experiment - Show understanding of osmotic movement |
In groups, learners are guided to:
- Prepare visking tubing with sucrose solution - Immerse in distilled water with capillary tube attached - Observe level changes - Discuss water movement by osmosis |
How can we demonstrate osmosis?
|
- KLB Bk 8 pg. 125
- Visking tubing - Capillary tube - Sucrose solution - Distilled water - Clamp stand - Beaker |
- Observation
- Practical assessment
- Written reports
|
|
| 11 | 2-3 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Demonstrating osmosis using visking tubing
Movement of Materials In and Out of the Cell - Demonstrating osmosis in plant material |
By the end of the
lesson, the learner
should be able to:
- Demonstrate osmosis using visking tubing - Explain observations from the experiment - Show understanding of osmotic movement - Demonstrate osmosis using potato tissue - Explain osmotic changes in plant cells - Appreciate osmosis in living tissues |
In groups, learners are guided to:
- Prepare visking tubing with sucrose solution - Immerse in distilled water with capillary tube attached - Observe level changes - Discuss water movement by osmosis - Prepare potato cylinders - Place in distilled water and concentrated sucrose solution - Measure length changes - Calculate averages and discuss findings |
How can we demonstrate osmosis?
How does osmosis occur in plant cells? |
- KLB Bk 8 pg. 125
- Visking tubing - Capillary tube - Sucrose solution - Distilled water - Clamp stand - Beaker - KLB Bk 8 pg. 127 - Irish potato - Cork borer - Sucrose solution - Distilled water - Ruler - Beakers |
- Observation
- Practical assessment
- Written reports
- Observation - Practical assessment - Data analysis |
|
| 11 | 4 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Factors affecting osmosis: temperature
|
By the end of the
lesson, the learner
should be able to:
- Investigate the effect of temperature on osmosis - Explain how temperature affects osmotic movement - Show understanding of factors affecting osmosis |
In groups, learners are guided to:
- Prepare potato cavities with sucrose solution - Place one in boiling water, one at room temperature - Observe level changes - Discuss the effect of temperature |
How does temperature affect osmosis?
|
- KLB Bk 8 pg. 131
- Fresh potato - Concentrated sucrose solution - Water trough - Heat source - Distilled water |
- Observation
- Practical assessment
- Written tests
|
|
| 11 | 5 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Factors affecting osmosis: temperature
|
By the end of the
lesson, the learner
should be able to:
- Investigate the effect of temperature on osmosis - Explain how temperature affects osmotic movement - Show understanding of factors affecting osmosis |
In groups, learners are guided to:
- Prepare potato cavities with sucrose solution - Place one in boiling water, one at room temperature - Observe level changes - Discuss the effect of temperature |
How does temperature affect osmosis?
|
- KLB Bk 8 pg. 131
- Fresh potato - Concentrated sucrose solution - Water trough - Heat source - Distilled water |
- Observation
- Practical assessment
- Written tests
|
|
| 12 | 1 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Other factors affecting osmosis
|
By the end of the
lesson, the learner
should be able to:
- Identify other factors affecting osmosis - Explain concentration gradient and pressure effects - Appreciate the complexity of osmosis |
In groups, learners are guided to:
- Research factors affecting osmosis - Discuss concentration gradient and cell pressure - Record and share findings |
What factors influence the rate of osmosis?
|
- KLB Bk 8 pg. 132
- Internet access - Reference books - Print materials |
- Observation
- Written assignments
- Oral presentations
|
|
| 12 | 2-3 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Other factors affecting osmosis
Movement of Materials In and Out of the Cell - Role of osmosis in living things |
By the end of the
lesson, the learner
should be able to:
- Identify other factors affecting osmosis - Explain concentration gradient and pressure effects - Appreciate the complexity of osmosis - Describe roles of osmosis in organisms - Explain water absorption, support, and stomatal function - Show appreciation for the importance of osmosis |
In groups, learners are guided to:
- Research factors affecting osmosis - Discuss concentration gradient and cell pressure - Record and share findings - Search for information on roles of osmosis - Discuss water absorption in roots - Discuss cell support and stomatal opening - Discuss osmoregulation and feeding in insectivorous plants |
What factors influence the rate of osmosis?
Why is osmosis important in living organisms? |
- KLB Bk 8 pg. 132
- Internet access - Reference books - Print materials - KLB Bk 8 pg. 133 - Internet access - Reference materials - Charts - Digital devices |
- Observation
- Written assignments
- Oral presentations
- Observation - Written tests - Oral questions |
|
| 12 | 4 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Observing plant changes during the day
|
By the end of the
lesson, the learner
should be able to:
- Observe wilting and turgidity in plants - Explain the role of osmosis in plant firmness - Appreciate osmotic regulation in plants |
In groups, learners are guided to:
- Observe plant leaves at different times of day - Watch videos showing plant changes - Discuss the role of water uptake and loss - Relate observations to osmosis |
Why do plants wilt during hot weather?
|
- KLB Bk 8 pg. 135
- Videos of plants - Internet access - Living plants for observation |
- Observation
- Oral questions
- Written reports
|
|
| 12 | 5 |
Living Things and the Environment
|
Movement of Materials In and Out of the Cell
- Observing plant changes during the day
|
By the end of the
lesson, the learner
should be able to:
- Observe wilting and turgidity in plants - Explain the role of osmosis in plant firmness - Appreciate osmotic regulation in plants |
In groups, learners are guided to:
- Observe plant leaves at different times of day - Watch videos showing plant changes - Discuss the role of water uptake and loss - Relate observations to osmosis |
Why do plants wilt during hot weather?
|
- KLB Bk 8 pg. 135
- Videos of plants - Internet access - Living plants for observation |
- Observation
- Oral questions
- Written reports
|
|
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