Lesson 3: Proposal Justification

Key Idea

A final design needs a powerful explanation to show it is successful. This explanation connects the product's features back to the original goals of the project. Simply showing the finished item is not enough to prove it works well.

A strong explanation, or design justification, uses evidence from testing to support its claims. For a health bar, this means presenting data from taste tests, cost analysis, and nutritional calculations. This data proves how the design meets each specific goal, like being tasty and affordable.

Key Idea

A strong design proposal makes specific claims about how well a product meets its goals. For example, a claim might state that a health bar is both low-cost and provides a specific amount of energy.

To prove these claims, designers use evidence-based argumentation. This involves presenting specific data gathered during testing. This evidence can be numbers, like the final cost in dollars, or qualitative information, like feedback from taste-testers.

Key Idea

Before justifying a design, engineers create a detailed description of the final product. This description acts like a blueprint or a final recipe, listing every important detail so anyone can understand exactly what was made.

These design specifications include the product's components, like the exact ingredients in a health bar. They also describe its final features, such as its precise cost, nutritional information, and taste score from testing. This creates a clear and complete picture of the final design, ready for evaluation.