1. T RIZ P OWER T OOLS Function Writing Exercises These Exercises begin with simpler functions and progress to “confusing functions”. The rules to function writing are found in the appendix to “TRIZ Power Tools—Job #5 Resolving Problems”

2. Everyday Language | Functional Language The Ball Breaks the Glass ?

3. Everyday Language | Functional Language Ball Glass Breaks (changes # pieces) The Ball Breaks the Glass

4. Everyday Language | Functional Language ? The bearing holds the rod

5. Everyday Language | Functional Language Bearing Rod Holds / Constrains (Controls Position) The bearing holds the rod

6. Everyday Language | Functional Language ? The pipe conducts the liquid

7. Everyday Language | Functional Language Pipe Liquid Conducts (Controls path) The pipe conducts the liquid

8. Everyday Language | Functional Language ? The wire conducts electricity

9. Everyday Language | Functional Language Wire Charges Conducts (controls path) Fuzzy Term The wire conducts electricity

10. Everyday Language | Functional Language ? The cap seals the bottle

11. Everyday Language | Functional Language The cap seals the bottle Cap Liquid Constrains (Controls position) Bottle Constrains (Controls position)

12. Everyday Language | Functional Language ? The lightening rod protects the house

13. Everyday Language | Functional Language Rod Charges Conducts (changes path) The lightening rod protects the house House Damage

14. Everyday Language | Functional Language ? The Thermometer measures the temperature

15. Everyday Language | Functional Language Liquid Glass Cools The Thermometer measures the temperature Mercury Cools Observer Informs Positions Heats

16. Everyday Language | Functional Language The gold improves the reliability Shown is a sliding contact switch. Gold coats the switch arm and the contacts that stick up. ?

17. Everyday Language | Functional Language Gold Charge Conducts (controls the path) The gold improves the reliability Conductors Holds (controls the Position) Oxy / H 2 0 Stops (controls the Position)

18. Everyday Language | Functional Language ? The paint stops deterioration

19. Everyday Language | Functional Language The paint stops deterioration Paint Holds (controls the Position) Oxy / H 2 0 Stops (controls the Position) Wood

20. Everyday Language | Functional Language The toothbrush brushes the teeth ?

21. Everyday Language | Functional Language bristles Plaque/ food particles Disturbs (changes location) The toothbrush brushes the teeth Teeth Holds (Controls location) Guides (Controls Path) Handle Positions User Positions

22. Everyday Language | Functional Language ? The Oil Lubricates the piston

23. Everyday Language | Functional Language The Oil Lubricates the piston Oil Piston Guides (controls path) Positions (Controls Position) Bore Restrain (Friction)