The SPICE Model - Design Process

S –Situation
P – Problem
I – Investigation
C – Construction
E – Evaluation

Situation (Scenario)
The situation gives the frame of reference for the design brief or problem. This sets the stage for the activity and helps to provide a context for the design problem. The situation should be a creative story that takes into account such factors as age and background knowledge of students. Students should be encouraged to write situations that are as real as possible while maintaining an element of creativity. The situations should be written so they are open-ended and allow for a variety of solutions.

Problem (Design Brief)
The design brief is a short statement indicating what is to be designed and made. A detailed design brief also states any restrictions and/or requirements placed on the design (e.g., materials, size, cost, time allotted, and processes to be used). The design brief is developed in conjunction with the situation.

Investigation
During this stage, students incorporate a variety of idea generation and information gathering techniques to learn more about the problem and a possible solution. Students brainstorm a variety of possible solutions and consult reference materials for further ideas. Students should sketch their ideas for solutions and include annotations as needed to help explain how the solution works and is fabricated. In conducting their investigation, students should consider such factors as cost, size, availability of
materials, appearance, functionality, ergonomics, and safety considerations while ensuring that all requirements of the design brief are met.

Construction
Once students have compiled a list of ideas they select the one they feel is the best possible solution to the problem. Students should then complete working diagrams of their solution with all the necessary dimensions. They choose the best possible method of construction and then begin fabricating their solution. Students first build a prototype from recyclable materials in order to ensure their solution is viable.

Evaluation
During this stage, students develop methods of testing their prototype to see if it meets the design criteria. If it does then they begin the construction of the final product. If it fails to meet the requirements, students return to the investigation and choose another solution or modify the existing one. The new solution must be constructed and tested again to ensure the design brief requirements have been satisfied.