It typically takes students in fifth through eighth grade about 10 to 15 minutes to complete Edheads' "Design a Cell Phone" activity. Edheads recommends students use a computer with a mouse for this activity, as touchscreens and tablets tend to slow down the process.
The Edheads "Design a Cell Phone" activity is a Flash game in which students create a cell phone design for senior citizens. The activity involves analyzing research, designing the phone by changing options to suit the market and testing the prototype. The activity is meant to stimulate engineering skills. The Edheads website also suggests adapting the activity to create cell phones for other demographics, such as middle schoolers, which may take longer to complete.