Lesson Plan

• Describe why measuring business size is important for different stakeholders.
• Compare at least three size measures (e.g., turnover, profit, market share) and identify their advantages and limitations.
• Evaluate which size measure is most appropriate for a given industry and analytical purpose.
• Apply a decision‑making framework to select the best measure for a case study.

• Projector and screen
• Whiteboard and markers
• Printed handout of the comparative table of size measures
• Case‑study worksheets with firm data
• Sticky notes for group brainstorming
• Laptop with internet access for quick data lookup

Begin with a quick poll: “What makes a company ‘big’ in your eyes?” Capture prior knowledge about turnover and employee numbers, then outline that today’s success criteria are to justify the most suitable size metric for different business contexts.

1. Do‑now (5') – Students list three ways they think business size can be measured and share briefly.
2. Mini‑lecture (10') – Teacher presents the seven common measures using the comparative table on the projector.
3. Guided analysis (12') – In pairs, students examine the Firm A vs. Firm B case, fill a worksheet indicating which measure favours each firm and discuss why.
4. Decision‑making framework (10') – Whole‑class flowchart activity: groups map industry, purpose, and data availability to select the most appropriate measure.
5. Check for understanding (8') – Quick quiz (Kahoot or exit ticket) with scenarios requiring selection of a size metric.
6. Reflection (5') – Students write one takeaway about the importance of context when choosing a measure.

Summarise that no single metric fully defines size and that context drives the choice. Collect exit tickets where pupils state the measure they would use for a new tech startup. Assign homework to research a real company’s reported size metric and prepare a brief justification.