1. © 2010 University of California, Irvine – André van der Hoek1June 13, 2015 – 11:41:27 Informatics 121 Software Design I Lecture 2 André van der Hoek and Alex Baker Duplication of course material for any commercial purpose without the explicit written permission of the professor is prohibited.

2. © 2010 University of California, Irvine – André van der Hoek2June 13, 2015 – 11:41:27 Today’s Lecture One design exercise Reflection Second assignment

3. © 2010 University of California, Irvine – André van der Hoek3June 13, 2015 – 11:41:27 Five Teams Team 1 1.Karen Quan 2.Lucas Kam 3.Duncan Tsai 4.Muhammad Zaman 5.Jarrett Baugh 6.Michael Cupino 7.Thanh Le 8.Edward Gim 9.Kevin Huynh Team 3 1.Georgio Moussan 2.Martina Mickos 3.Steven Nguyen 4.Kevin Sar 5.Tri Duc Pham 6.Sarah Lee 7.Simon Huynh 8.Marianne Conner 9.Evan White Team 5 1.Mark Capil 2.Kenneth Compass 3.Jonathan Fuentes 4.Ramakrishnan Murthy 5.Jesse Joseph 6.Ellen Eramya 7.Sanjay Jauhar 8.Ammar El-din 9.Michael Tang 10.Danielle Yu Team 2 1.Julie Darwish 2.Ferdinand Lucero 3.Marcel Pufal 4.Vatsal Shah 5.Warren Trinh 6.Jordan Speer 7.Norik Davtian 8.Aaron Donk 9.Ryan Cadavona Team 4 1.Candace Chen 2.Sabel Braganza 3.Shawn Ridgeway 4.Michael Distefano 5.Danielle Song 6. Masis Nguyen 7.Roger Le 8.Christopher Lang 9.Melody Budiono

4. © 2010 University of California, Irvine – André van der Hoek4June 13, 2015 – 11:41:27 Your Third Design Exercise Build a structure that spans two bases… …such that the distance between the two bases is maximized… …out of Play-Doh, wire, paper, and dowels… …in 1 hour (we will take some pictures)

5. © 2010 University of California, Irvine – André van der Hoek5June 13, 2015 – 11:41:27 Your Third Design Exercise – Available Materials 8 dowels 3 feet of wire 10 sheets of paper 3 large cans of Play-Doh

6. © 2010 University of California, Irvine – André van der Hoek6June 13, 2015 – 11:41:27 Your Third Design Exercise – Constraints The structure must be able to suspend one large can of Play- Doh for 15 seconds –in the middle of the structure –in one other place on the structure of your choosing  not overlapping with a base  not overlapping with middle of the structure The dowels must remain in one piece The structure as built should reflect the design you specified

7. © 2010 University of California, Irvine – André van der Hoek7June 13, 2015 – 11:41:27 Your Third Design Exercise – The Process Design: 15 minutes –hand in three different designs Build: 20 minutes Re-design: 15 minutes –hand in your final design Build: 10 minutes After the hour, the final structure has to stand You are given access to sample materials The structure with the largest span between the two bases, and that adheres to its final design, wins

8. Reflection How useful was it to have three designs? Did you attempt to build all three? © 2010 University of California, Irvine – André van der Hoek8June 13, 2015 – 11:41:27

9. © 2010 University of California, Irvine – André van der Hoek9June 13, 2015 – 11:41:27 Reflection What did you learn during the first build phase?

10. © 2010 University of California, Irvine – André van der Hoek10June 13, 2015 – 11:41:27 Reflection What did your second design phase focus on?

11. © 2010 University of California, Irvine – André van der Hoek11June 13, 2015 – 11:41:27 Reflection What is the key idea underlying your second design?

12. © 2010 University of California, Irvine – André van der Hoek12June 13, 2015 – 11:41:27 Reflection How much could you reuse from one version to the next?

13. © 2010 University of California, Irvine – André van der Hoek13June 13, 2015 – 11:41:27 Reflection How closely did you follow your final design?

14. © 2010 University of California, Irvine – André van der Hoek14June 13, 2015 – 11:41:27 Reflection What influence did the constraints have? –limited dowels? –supporting Play-Doh? –two spots for the can? –nature of the bases? –2 x 10 minutes of build time? –…

15. Reflection How did you negotiate amongst these competing constraints? © 2010 University of California, Irvine – André van der Hoek15June 13, 2015 – 11:41:27

16. © 2010 University of California, Irvine – André van der Hoek16June 13, 2015 – 11:41:27 Reflection How much could you draw upon your existing knowledge of bridges?

17. © 2010 University of California, Irvine – André van der Hoek17June 13, 2015 – 11:41:27 Reflection Would you have rather had one long, 1 hour, building (err, hacking) phase?

18. © 2010 University of California, Irvine – André van der Hoek18June 13, 2015 – 11:41:27 Reflection Was it useful to step back and think?

19. © 2010 University of California, Irvine – André van der Hoek19June 13, 2015 – 11:41:27 Reflection How did you know what would / would not work?

20. © 2010 University of California, Irvine – André van der Hoek20June 13, 2015 – 11:41:27 Reflection Which representation(s) did you use while designing?

21. © 2010 University of California, Irvine – André van der Hoek21June 13, 2015 – 11:41:27 Reflection What did those representations afford you in the design process?

22. © 2010 University of California, Irvine – André van der Hoek22June 13, 2015 – 11:41:27 Three years ago… Similar?

23. © 2010 University of California, Irvine – André van der Hoek23June 13, 2015 – 11:41:27 Assignment 2 Read “The Evolution of Useful Things” by Henry Petroski –chapter 5 “Little Things Can Mean a Lot” –if you want to read more, of course you can read more –available on the class web site Provide a 1 page summary with what you consider are the major lessons to learn from this text and how these lessons relate to the various design exercises we performed in class –due Tuesday