Lesson Plan

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Lesson Plan
Grade: Date: 25/02/2026
Subject: Physics
Lesson Topic: recall and use the following prefixes and their symbols to indicate decimal submultiples or multiples of both base and derived units: pico (p), nano (n), micro ( μ), milli (m), centi (c), deci (d), kilo (k), mega (M), giga (G), tera (T)
Learning Objective/s:
  • Describe the purpose of SI prefixes and their symbols.
  • Convert quantities between standard units and prefixed forms for both base and derived units.
  • Apply appropriate prefixes to simplify numerical values in physics calculations.
  • Solve typical physics problems that require unit conversion using SI prefixes.
Materials Needed:
  • Projector or interactive whiteboard
  • Printed worksheet with conversion exercises
  • SI‑prefix reference chart (handout or slide)
  • Calculators
  • Whiteboard and markers
 Introduction:

Begin with a quick visual of a nanometer‑scale object to spark curiosity about measuring extremely small and large quantities. Review students’ prior knowledge of basic SI units and ask them why scientists prefer using prefixes. State that by the end of the lesson they will reliably choose and apply the correct prefix to any given quantity.
Lesson Structure:
  1. Do‑Now (5'): Students complete a short quiz converting three values using SI prefixes.
  2. Mini‑lecture (10'): Explain the hierarchy of prefixes, show the reference table, and demonstrate placement of symbols before base and derived units.
  3. Guided Practice (15'): Work through three teacher‑led examples (length, energy, power) highlighting the decision process.
  4. Collaborative Activity (10'): In pairs, students solve worksheet problems, then share answers on the board.
  5. Check for Understanding (5'): Exit‑ticket where each student writes one correct prefixed form for a given quantity.
Conclusion:

Summarise how prefixes streamline calculations and reinforce the power‑of‑ten relationship. Collect exit‑tickets to gauge mastery and assign homework: a set of five conversion problems to be completed before the next class.