1. 1.Constraints are new products, systems, or processes that have never existed before. 2.An engineer is, in essence, a problem-solver. 3.Feedback is used to regulate or control a technological system. November 5, 2008 DRILL – Write the sentence and answer True or False 1. False – Constraints are limits. 2. True 3. True U3b-L1

2. UNIT 3 – Engineering Design Engineering, the systematic application of mathematical, scientific, and technical principles, produces tangible end products that meet our needs and desires. What is a systematic application of something? – an organized or established procedure U3b-L1

3. UNIT 3 – Engineering Design a.Getting familiar with the Big Idea b.The Design Process c.Core Technologies d.Mechanical Engineering e.Electrical Engineering f.Reverse Engineering g.Fluid Engineering h.Thermal Engineering i.Optical Engineering j.Materials Engineering U3b-L1

4. The Engineering Design Process PURPOSE OF LESSON To enable students to understand and apply the design process. U3b-L1

5. Technology as a System Technology – performing a by using an object that is not part of the human body. System – each technology has parts and each part has a with all other parts and to the whole. Every TECHNOLOGY is developed through a SYSTEM U3b-L1

6. Car Engine 1.What is the it performs? 2.How is this a 3.What are the U3b-L1 1. transfers energy 2. components working in relationship

7. U3b-L1 Components: –Goals Humans develop technology to meet needs Each artifact meets more than one goal –Inputs Resources that go into a system and are used by it –Processes Mgt. Process, Design Process, Production Process –Outputs Technological systems are designed to produce specific outputs. Manufactured products, constructed structures, communicated messages, transported people or goods. –Feedback and Control Using information about the outputs to regulate the system. Technology as a System EXAMPLE: Radar Developed to determine the position and speed of aircraft. Major impact on military strategies during WW2. Today, it contributes to safe, reliable air transportation and predicts the weather.

8. HOW DO WE KNOW IT WORKED??? A great way to express information is with a Graphic Organizer HOW DO WE ALTER THINGS IF IT DIDN’T? Technological system: Technology as a System U3b-L1 INPUTS PROCESSESOUTPUTS GOALS FEEDBACK & Control

9. EXAMPLE U3b-L1 Goal: create a system to send new, sealed CDs to Wal-Mart. Inputs: People, time, capital, energy, etc. Processes: design, production, management Outputs: CDs Feedback: –Do the CDs work? –Are they sealed correctly? –Do they break easily? Control: –Straighten printing of labels –Pay workers appropriately –Buy better conveyor belt motor

10. HOMEWORK U3b-L1 On a clean sheet of paper, write complete sentences: 1.In what ways is technology a system? 2.List and describe the five major components of a technological system. 3.Select a technological device that you use and complete the following: Device: Major Inputs: Processes: Design, Production, and Management Desired Outputs: Undesired Outputs: DONE ALREADY