Show a picture of a technical system (f.i. microwave, thermometer, mobile phone…). Students has to define the criteria which the designer has determined for his technical system.

Following questions can help to define the criteria for a corkscrew:

• How does the corkscrew look? Describe
• What are the user characteristics?
• Which are the criteria that the designer has defined for his technical system?
• What was propably the original instruction for the designer?

Let the students post stickies on a Wallwisher with the answer on the questions or make a digital mindmap, make wordcloud

http://www.wallwisher.com/