1. The Wonderful World of…
TECHNOLOGY

2. Class Starter What is technology?
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What is technology?
What is a technical object? Give some examples.
What is a technical system?

3. 1) What is Technology?
Technology is the making, usage, and knowledge of tools, machines, techniques, crafts, systems or methods of organization in order to solve a problem or perform a specific function. (Wikipedia definition)

4. 2) What is a Technical Object?

5. 2) What is a Technical Object?
A man-made object that serves a purpose (or function).

6. 3) What is a Technological System?
A technical object which transforms matter or energy.
Ex: A scooter transforms chemical energy (gasoline) into kinetic energy that moves the scooter (and the driver) forward.

7. Components of a system Technical systems have: Inputs:
Everything that enters a system
Ex: matter, energy, force
a transformation process
The task the system performs
Outputs:
Everything that exits a system
Ex: can be matter, energy

8. Ex: The Apple Peeler- a technical system

9. Ex: The Apple Peeler- a technical system
Inputs
Initial material
Verification and Control mechanisms
Energy Source
Outputs
End material
Waste and residue

10. Ex: The Apple Peeler- a technical system
Inputs
Initial material
Verification and Control mechanisms
Energy Source
Outputs
End material
Waste and residue
Apples
Manual adjustment of the apple
Muscle force
(chemical energy)
Peeled apples
Apple peels

11. Ex: A dishwasher- a technical system

12. Ex: A dishwasher- a technical system
Inputs
Initial material
Verification and Control mechanisms
Energy Source
Outputs
End material
Waste and residue

13. Ex: A dishwasher- a system
Inputs
Initial material
Verification and Control mechanisms
Energy Source
Outputs
End material
Waste and residue
Dirty dishes
Water
Dishwasher detergent
Selection of an automatic wash cycle
Electricity
Clean dishes
Waste Water

14. Ex: A kettle- a technical system

15. Ex: A kettle- a technical system
What is the function of this technical system?
__________________________________________________________________________________________________________________________________
Inputs
Initial material
Verification and Control mechanisms
Energy Source
Outputs
End material
Waste and residue

16. Ex: A kettle- a technical system
The function of a kettle is to boil water.
Inputs
Initial material
Verification and Control mechanisms
Energy Source
Outputs
End material
Waste and residue
Room temp water
On/ off switch
Lid lever
Light to signal boiling
Graduations to measure volume
Whistle to signal boiling
Electrical energy
Boiling water
None

17. Classroom Pencil Sharpener