1. Index Card Chair Engineering
Ignore the paper clips in this photo
Build a chair
Use index cards
Support at least one can
20 minutes to build and test
Build an index card chair that can support the weight of an apple, orange or unopened can of soda.

2. Index Card Chair Engineering
Engineering Criteria
Must resemble a chair or a chair with an attached footstool
Be able to pick up the chair as one piece
Support the weight of at least one can
Engineering Constraints
Use only index cards
No tape, glue, staples, etc.
Free standing -- not attached to anything for support
Discuss difference between qualitative and quantitative criteria.
Likewise for constraints.

3. Discussion Questions
When you were given the challenge, what did you do or think?
What different designs did you see and which ones were the most effective? Why?
How many designs did you try to build before you got one that could support the weight?
Did you brainstorm different solutions? Did that help you make a decision as to what would be the best chair to build?
Would it have helped to have other tools to build your chair?
What would happen if the chair failed?