Lesson Plan

• Define scalar and vector quantities and explain their distinguishing features.
• Identify and classify common scalar and vector quantities from the Cambridge A‑Level syllabus.
• Represent vectors graphically and algebraically, including component decomposition.
• Apply vector addition and multiplication rules to solve basic physics problems.

• Projector or interactive whiteboard
• PowerPoint/Google Slides presentation
• Handout with scalar‑vector comparison table
• Worksheet for vector addition practice
• Set of coloured arrows or vector cards
• Whiteboard and markers

Begin with a quick “mystery picture” of an arrow hidden behind a shape to spark curiosity about direction. Review students’ prior knowledge of magnitude and units, then state that today they will distinguish quantities that need direction from those that do not. Explain that success will be measured by correctly classifying examples and drawing vectors with proper notation.

1. Do‑Now (5'): Students list as many physics quantities as they can; teacher sorts them into two columns on the board.
2. Direct Instruction (10'): Present definitions, notation, and the scalar‑vector comparison table using slides.
3. Guided Practice (12'): Demonstrate vector addition with coloured arrows; students work in pairs to add two vectors on paper.
4. Worksheet Activity (15'): Students complete a worksheet identifying scalars/vectors and converting vector expressions to components.
5. Check for Understanding (5'): Quick quiz via Kahoot or show‑of‑hands on key misconceptions.
6. Summary & Exit Ticket (3'): Students write one example of a scalar and one of a vector on a sticky note and hand it in.

Recap the main differences between scalars and vectors and highlight how direction influences calculations. Collect exit tickets to gauge understanding, and assign a short homework task: students must find three real‑world examples of each type and represent one vector graphically.