November 22, 2010 Answer each question in complete sentences. 1.How does your effort, participation, and behavior in this class this quarter compare to last quarter? 2.Are you being the type of student you want to be? 3.Looking into the future at what you want your life to look like, are your actions taking you in that direction? DRILL U3b-L6

Unit 3a (the Big Idea) Unit 3b (Engineering Design Process) Unit 3c (Core Technologies) TEST Week of December 8 U3b-L6

REVIEW Unit 3a – The Big Idea What is engineering? Engineering is the systematic application of scientific, mathematical, and technical principles that yields tangible end products that meet our needs and desires. Personal characteristics of engineers 1.Creativity 2.Resourcefulness 3.Ability to think abstractly U3b-L6

REVIEW Unit 3a – The Big Idea 4 design principles 1.Design is the result of a formal, sequential process. 2.Design is driven by profit motive and market ($ or not). 3.Design is the result of goal-oriented research. 4.Designs must be continually checked, refined, and improved U3b-L6

REVIEW Unit 3a – The Big Idea 8 Constraints on the 1.Safety – is the product safe to use? 2.Reliability – will it work consistently over time? 3.Cost – is it affordable? 4.Quality Control – does it meet customer requirements? 5.Environmental Concerns – does it harm the natural or human environment negatively? 6.Manufacturability – can it be made? 7.Maintenance – how easily can it be maintained or upheld? 8.Ergonomics – how efficiently can the human body utilize it? Design Process U3b-L6

5 major components of 1.Goals Humans develop technology to meet needs or wants Each artifact meets more than one goal 2.Inputs Resources that go into a system and are used by it 3.Processes Design Process, Production Process, Mgt. Process 4.Outputs Technological systems are designed to produce specific outputs. Manufactured products, constructed structures, communicated messages, transported people or goods. Desired and Undesired 5.Feedback and Control Using information about the outputs to regulate the system. REVIEW U3b-L6

REVIEW A volunteer is needed to complete the Technological System Components represented in a flow chart (teacher press “ctrl P” for pen, “ctrl E” for eraser): INPUTSPROCESSESOUTPUTS GOALS FEEDBACK Control U3b-L6

Unit 3b – The Engineering Design Process 7 inputs into all technological systems 1.People 2.Information 3.Time 4.Capital ($) 5.Machines and tools 6.Materials 1.Natural – found in nature 2.Synthetic – human-made 3.Composite – mixture of natural and synthetic 7.Energy REVIEW U3b-L6

Unit 3b – The Engineering Design Process Terms: –Risk Analysis: an analysis of a technology that minimizes the likelihood of undesired outputs –System: a technology or process that has many parts, and each part has a relationship to each other and the whole –Criteria: a standard on which a judgment or decision may be based –Constraint: a limit or restriction to the design process –Prototype: a working model used to test design ideas –Engineering: the systematic application of scientific, mathematical, and technical principles that yields tangible end products that meet our needs and desires. REVIEW

U3b-L6 CAM TOY Design Project #1 Objective: To enable you to understand and use the Engineering Design Process

h A number of mechanisms are drawn on your handout. See if you can LETTER the correct name beneath each one. Classwork/Homework Do This Side Only CHAIN AND SPROCKET SYSTEM LINKAGESLEVERS SPUR GEARSPULLEY SYSTEM DROP CAM SCREW THREADRACK AND PINION SPRING U3b-L6