| Lesson Plan |
| Grade: |
Date: 25/02/2026 |
| Subject: Physics |
| Lesson Topic: express derived units as products or quotients of the SI base units and use the derived units for quantities listed in this syllabus as appropriate |
Learning Objective/s:
- Describe the seven SI base units and their symbols.
- Derive the expression of common SI derived units in terms of base units.
- Apply dimensional analysis to check consistency of equations and convert results to named derived units.
- Solve simple physics problems by substituting base‑unit expressions and re‑assembling the final answer in the appropriate derived unit.
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Materials Needed:
- Projector or interactive whiteboard for displaying tables and equations.
- Printed worksheet with derived‑unit expressions and practice problems.
- Calculator (optional) for numerical calculations.
- Whiteboard and markers for whole‑class examples.
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Introduction:
Begin with a quick quiz question: “What are the units of force, energy and power?” Review the seven SI base units that students have already learned, linking them to everyday examples. Explain that today’s success criteria are to rewrite derived units using base units and to use those expressions to verify physics calculations.
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Lesson Structure:
- Do‑now (5') – Students complete a short matching activity on base units.
- Direct instruction (10') – Teacher presents the rule for forming derived units and works through the table of common derived units.
- Guided practice (12') – Whole‑class example of kinetic energy calculation, highlighting substitution of base‑unit expressions.
- Collaborative activity (10') – Small groups complete worksheet problems converting several derived units and checking dimensional consistency.
- Check for understanding (5') – Quick exit quiz using clickers or a show of hands on key derived‑unit conversions.
- Summary & reflection (3') – Teacher revisits the learning objectives and answers any lingering questions.
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Conclusion:
Summarise how every derived unit can be expressed as a product or quotient of the seven base units and why this matters for error‑free calculations. Ask students to write one derived‑unit conversion on an exit ticket before leaving. For homework, assign a set of A‑Level style problems that require full unit analysis.
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