Lesson Plan

• Define speed as distance divided by time and state its SI and everyday units.
• Apply the formula v = s/t to calculate speed, distance, or time in varied contexts.
• Convert speed between m/s and km/h accurately using the factor 3.6.
• Distinguish speed (scalar) from velocity (vector) and avoid common unit‑mixing errors.

• Projector and screen
• Whiteboard and markers
• Measuring tape or ruler
• Stopwatch(s)
• Worksheet with practice questions
• Scientific calculators
• Speed conversion chart (m/s ↔ km/h)

Show a short video of a sprinter and a cyclist to spark curiosity about how fast objects move. Ask learners to share everyday examples of speed they have observed. Explain that today they will formalise speed as distance per time and learn to use the equation v = s/t. Success will be demonstrated by correctly solving the worksheet problems.

1. Do‑now (5'): Quick mental question – “If you walk 100 m at 1 m/s, how many seconds does it take?” Students write answer.
2. Mini‑lecture (10'): Define speed, present v = s/t, discuss units and the 3.6 conversion factor using projector.
3. Guided example (8'): Work through the cyclist problem step‑by‑step; students fill in a worksheet template.
4. Pair activity (12'): In the hallway, measure a 10 m track with a stopwatch, calculate speed, then convert to km/h.
5. Common mistakes discussion (5'): Highlight scalar vs. vector and unit consistency errors.
6. Independent practice (10'): Students complete three quick‑check questions from the worksheet while teacher circulates.

Recap that speed equals distance divided by time and that keeping units consistent is essential. For the exit ticket, each pupil writes one real‑world example of speed with its value in both m/s and km/h. Homework: finish the remaining worksheet questions and convert three everyday speeds to SI units.