• Functional criteria and aesthetic criteria are separate, but related to each other. 

• Designers to develop their ideas, practical research in the form of testing needs to take place.

• The production of models or prototypes enables designers to determine whether the solution may be appropriate from both a functional and aesthetic point of view.

• Continual, ongoing evaluation will ensure you stay on task to meet your identified need or opportunity. 

• When evaluating, you need to check what you have done against the criteria and identfieid need. 

• The Deming cycle is a v valuable tool for evaluation to keep the project on track. 

• The environmental impact could affect a macro-environment or micro-environment like a bedroom or classroom.

Notes based on old textbook