Description should include
•    how criteria and constraints were met or not met
•    what tradeoffs were made, and whether they were acceptable
•    the accuracy of the solution
•    alternative materials that could be used
•    alternative design ideas and why they might be better.

Process/Skill Questions:

•    What needs to be improved for the redesign to be successful?
•    How can the data inform the redesign?
•    What adjustments to the model or prototype need to be made to meet the criteria or constraints?
•    What tradeoffs, if any, had to be made? Were they acceptable?
•    What is an example of a tradeoff when improving the environment?
•    Will the user of the model or prototype be satisfied with the project?