| Lesson Plan |
| Grade: |
Date: 25/02/2026 |
| Subject: Physics |
| Lesson Topic: Recall and use a simple electron model to explain the difference between electrical conductors and insulators and give typical examples |
Learning Objective/s:
- Describe the simple electron model and how it accounts for electric current.
- Explain why electrons move freely in conductors but remain bound in insulators.
- Identify common examples of conductors and insulators and compare their key properties.
- Apply the model to predict material behaviour when a potential difference is applied.
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Materials Needed:
- Projector and screen
- Printed handout with comparison table
- Sample materials: copper wire, rubber strip, graphite rod, salt water in beaker
- Worksheet for guided practice
- Whiteboard and markers
- Laptop with simple circuit simulation (optional)
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Introduction:
Begin with a quick demonstration: touch a metal doorknob and a rubber handle after rubbing a balloon. Ask students what they notice about the sensation. Recall previous lessons on atoms, electrons and charge. State that by the end of the lesson they will be able to use a simple electron model to explain why some materials conduct electricity while others do not.
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Lesson Structure:
- Do‑now (5'): Students list everyday items they think are conductors or insulators on a sticky note.
- Mini‑lecture (10'): Review electron model and introduce the distinction between free and bound electrons, using the projected diagram.
- Hands‑on investigation (15'): Groups test conductivity of the sample materials with a simple circuit (battery, bulb, wires) and record observations.
- Guided analysis (10'): Compare results to the model; fill in a comparison table (electron mobility, resistance, examples).
- Concept check (5'): Quick quiz (multiple‑choice) via show of hands to confirm understanding.
- Application task (10'): Students answer a short exam‑style question using the electron model.
- Wrap‑up (5'): Teacher summarises key points; students note any remaining questions.
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Conclusion:
Recap the electron model and its role in distinguishing conductors from insulators, highlighting the real‑world examples examined. Ask each student to write one exit‑ticket sentence explaining why a metal wire conducts but a rubber rod does not. Assign homework: complete a worksheet that asks them to classify additional materials and justify their choices using the model.
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