| Lesson Plan |
| Grade: |
Date: 25/02/2026 |
| Subject: Physics |
| Lesson Topic: Describe the features of a wave in terms of wavefront, wavelength, frequency, crest (peak), trough, amplitude and wave speed |
Learning Objective/s:
- Describe the key features of a transverse wave (wavefront, wavelength, frequency, period, crest, trough, amplitude, wave speed).
- Explain the relationship v = f λ and predict how changes in one quantity affect the others.
- Apply the definitions to solve basic wave‑speed problems using given values of f and λ.
- Identify and correct common misconceptions about wave terminology.
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Materials Needed:
- Projector and screen
- Whiteboard and markers
- Printed worksheet with wave diagram
- Slinky or rope for a live demonstration
- Ruler or measuring tape
- Calculators
- Student notebooks
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Introduction:
Begin with a short video of water ripples to capture interest. Ask students what they already know about distance, time and periodic motion, linking this to wave concepts. State that by the end of the lesson they will be able to label a wave diagram accurately and use v = f λ to calculate wave speed.
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Lesson Structure:
- Do‑now (5'): Quick quiz on frequency and wavelength definitions.
- Mini‑lecture with slides (10'): Introduce wavefront, wavelength, frequency, period, crest, trough, amplitude, and wave speed; show labelled diagram.
- Guided demonstration (8'): Use a slinky to illustrate wavefront, crest, trough, and amplitude while students observe.
- Collaborative worksheet (12'): Students label a wave diagram and calculate speed for given f and λ values.
- Misconception check (5'): Discuss three common errors; students rewrite statements correctly.
- Exit ticket (5'): Write one accurate definition of a wave term and one example applying v = f λ.
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Conclusion:
Summarise the eight wave features and reinforce the v = f λ relationship. Collect exit tickets as a formative check and assign homework: complete the additional wave‑speed problems on page 42 of the textbook.
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