1. Life Vest Challenge

2. Let’s review what we know about Density…
5 Facts About Density Video

3. Life Vest Challenge
Design and construct a personal flotation device that can keep a can of soup afloat for at least 60 seconds.

4. Constraints: Device must be in one attached piece
Some portion of the can must touch the water
Device must attach in less than 20 seconds
You may only test your prototype 3 times before presenting.

5. Possible Materials: Paper cups Straws Rubber bands Paper clips Tape
Balloons
Plastic baggies
Glue
Foil
Corks
Foam pieces
String
Hose
Small containers
Any other items approved by management

6. Life Vest Challenge Don’t forget your teacher checks!!!
Work through your engineering design process lab sheet.
Don’t forget your teacher checks!!!

7. Life Vest Challenge Presentations
Prepare a 6 slide presentation to share your design challenge with the class.

8. Picture of final design
Life Vest Challenge
Presentations
Slide 1should include:
Title of challenge
Team name
Team members
Picture of final design

9. Team Go With It: Rashanna Freeman, Brett Strittmatter,
Cardboard Chair
Presentation
Team Go With It: Rashanna Freeman, Brett Strittmatter,
Dee Thompson

10. Life Vest Challenge Presentations Slide 2 should include:
Restating of design challenge
Restating of requirements and constraints

11. Cardboard Chair Challenge
Design a chair constructed of corrugated cardboard that can support a 200-lb person.
may not use glue or tape to fasten any component of your chair together.
May use tape as a temporary support, but all of this material must be removed when the final evaluation begins.
May use other materials as fasteners (i.e. hardware) but they must be approved by the instructor.

12. Reasons why you chose your design
Life Vest Challenge
Presentations
Slide 3 should include:
Pictures of 3 sketches
Reasons why you chose your design

13. Cardboard Chair Challenge
We chose this design because we thought the triangular base would support the 200 pound weight. We chose this design because we thought the lounging design would provide more comfort.

14. Life Vest Challenge Presentations Slide 4 should include:
Sketch of the design you test
List of modifications you made during trials

15. Cardboard Chair Challenge
We chose this design because we thought the triangular base would support th 200 pound weight. We chose this design because we thought the lounging design would provide more comfort.

16. Video of your final test
Life Vest Challenge
Presentations
Slide 5 should include:
Results
Video of your final test

17. Cardboard Chair Challenge
Our chair easily held the weight of the instructor,
The back piece did bend, still provided some support.

18. Life Vest Challenge Presentations Slide 6 should include:
Thoughts from your team reflections
What things went well during challenge
Struggles and how your faced them
Changes you would make next time

19. Cardboard Chair Challenge
Our team really struggles during the design phase. We had a hard time converting our measurements to 1/10th scale. WE also struggled to build our scale model.
Upon reflection, we found that these struggles made our construction phase go much smoother. We had worked out many problems we would have faced during the design phase.
After reflecting, our team would make the following changes to our design:
Make base 1.5 feet tall instead of 2 feet tall.
Provide more support in the back piece.