TRIZ Textbooks:  CID Course for Children, 2-2W2
Methods of Solving Problems 

Topic 2. Both Cold and Hot
     (Physical Contradiction)
Fantasy City:
Course of Creative Imagination Development (CID), 2nd Grade, 2nd Semester, Children Workbook
Natalia V. Rubina, 1998 [published in Russian]
English translation by Irina Dolina, May 4, 2001
Technical Editing by Toru Nakagawa, September 3, 2001
Published in this "TRIZ Home Page in Japan" in English on Sept. 11, 2001 under the permission of the Author. 
(C) N.V.Rubina, I. Dolina, T. Nakagawa, 2001

 
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Methods of Solving Problems

Topic 2.  Both Cold and Hot
(Physical Contradiction)

[Lesson 1 in the Guide Book]

Guide-Book


Problem 9.[Problem 10 in GuideBook]  Imagine, that you have to squeeze a spring 10 cm long and 2 cm wide.  Put it flat between the pages of a book, close it so as the spring stays squeezed.
     You can squeeze the spring between two fingers.  But then you have to unclench the fingers otherwise you won’t be able to close the book.  And the spring will be released…  This situation faced the engineers, while they were making some device.  They had to squeeze a spring, put it inside and close the cover.  How can they do it without releasing the spring?
     The spring must be free and not free, squeezed and released.

 
Property  anti-property property – anti-property
small
                   ball 		 big
                 glove		 both small and big
                kitten
     The contradictory riddles.
 
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     In order to solve this problem, it is necessary that in the system where this contradiction has emerged the opposite properties should combine.
     Let’s investigate the problem about a spring.
     The spring must be squeezed to be placed in the device, and must be released to enable us to cover the lid.
     Let’s be more specific.  The spring must be squeezed, when it is put into the device (while the lid is not closed), and must be released, while the device is working.

       Solution:  ______________________________________________
 

Definition 2.  The physical contradiction manifests itself in the fact that an object  must be in two opposite states.
The system must be A, in order to …………………………..,
and it must be not A, in order to……………………………….

Problem 10.  [Problem 11 in GuideBook]   It’s common knowledge that the legendary Portoss’s was very fussy about his clothes.  Once, when the musketeer came to his tailor’s shop, he was irritated by the tailor, fussing around him.  “Don’t touch me by your ruler!”- Portoss shouted, getting tired.  What should the tailor do? How to take the musketeer’s measures without touching him?

     Take your time trying to guess, first, articulate the contradiction.

…………............. must be…..................…, in order to……………………….......,
and must be not …….........….., in order to……..…………………….


       Solution:  ______________________________________________


[Lesson 2 in the Guide Book]

Guide-Book


Problem 11.  [Problem 14 in GuideBook]  During the shooting of V. Peskov’s film about the animal life in Alaska, the American cinema workers were impressed when they saw five little foxes throw themselves at the camera.  The foxes are very shy animals and to shoot such an episode seemed impossible – the small foxes didn’t let the people approach them.  How did they manage to shoot the foxes so close?

………...........…... must be……...............…, in order to………………………..........,
and must be not ……................….., in order to……..…………………….


       Solution:  ______________________________________________
 

[Translation Note (T.Nakagawa,  Sept 3, 2001):  This workbook is the 1998 version, a year earlier than the Guide Book (1999).  Thus some of the later enhancements in the Guide Book are missing.]
 
 
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Last updated on Sept. 11, 2001.     Access point:  Editor: nakagawa@utc.osaka-gu.ac.jp