Lesson Plan

• Describe the key characteristics of the decline stage in the product life‑cycle.
• Explain how a product extension strategy can extend a product’s profitability.
• Identify and compare at least three common types of product extensions.
• Evaluate the seven‑step process for developing and launching a product extension.
• Assess the advantages and disadvantages of product extensions using a real‑world case study.

• Projector and screen
• Laptop with presentation slides
• Printed case‑study handout (EcoClean)
• Worksheet on product‑extension types and steps
• Whiteboard and markers
• Sample images of product packaging variations

Begin with a quick poll: “Name a product you think is no longer popular and why.” Connect this to prior knowledge of the product life‑cycle, then outline today’s success criteria – students will be able to explain and apply a product‑extension strategy to revive a declining product.

1. Do‑now (5’) – Students list features of a product they believe is in decline on sticky notes.
2. Mini‑lecture (10’) – Review the product life‑cycle, focusing on the decline stage and the rationale for extensions.
3. Interactive presentation (10’) – Show the five main types of product extensions with real‑world examples.
4. Case‑study analysis (15’) – In groups, students read the EcoClean example, complete the worksheet, and identify the extension type used.
5. Extension planning activity (15’) – Groups select a familiar declining product and outline a new extension using the 7‑step implementation process.
6. Whole‑class debrief (5’) – Groups share their ideas; teacher highlights key points and common pitfalls.

Recap the purpose and steps of a product extension strategy, then ask each student to write one “exit ticket” sentence summarising the most important factor for a successful extension. For homework, students research a current product in decline and propose a brief extension idea to bring to the next lesson.