The Systems Model Foundations of Technology The Systems Model © 2013 International Technology and Engineering Educators Association, STEM  Center for.

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<ul><li>Slide 1</li></ul> <p>The Systems Model Foundations of Technology The Systems Model 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Teacher Resource Unit 4 Lesson 2 Slide 2 The BIG Idea Big Idea: The universal systems model input, process, output, and feedback helps users isolate the components of a system so that they may be properly used and maintained. 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 3 What is a System? A system is a group of organized parts or sub-systems that are integrated to collectively achieve a desired goal. All systems have various inputs, which go through processes to produce outputs. High-functioning systems collect feedback to increase efficiency. 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 4 Systems Systems can be simple or complex. 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology versus Slide 5 Simple Systems Simple systems have a limited amount of sub-systems, which can be easily identified and diagnosed. The input, processes, outputs and feedback are easy to categorize in a simple system. 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 6 Complex Systems Complex systems have a hierarchy of sub- systems, which often interact with the environment and/or unknown variables. The input, processes, output and feedback are complex and the classification can be challenging. 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 7 Types of Systems Types of systems: Biological systems a group of organs that work together to perform a task Example: the heart, brain Mechanical systems a system of mechanisms that use power to change force or movement Example: a thermostat, bicycle 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 8 What is a System? Types of systems: Ecosystems a group of organisms that interact with their natural environment Example: predator/prey, nature Social systems how organisms interact with the designed world Example: supply and demand, driving 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 9 Inputs Inputs consist of the resources that flow into a technological system. Inputs typically include: People and time, Materials and capital, Tools and/or machines, Energy and information, 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 10 Processes Processes consist of the purposeful sequencing of tasks that combine resources to produce a desired output. Processes can be categorized into: Problem Solving: processes that works involve identifying the problem and selecting a solution Production: processes that involves creating a product or structure Management: processes that control and manage the inputs and processes involved in the system 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 11 Output Output is the end result, which can have either a positive or negative impact. Outputs can take the following forms: Unexpected Desired Expected Desired Unexpected Undesired Expected Undesired 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 12 Feedback Feedback is information used to monitor and control a system. The feedback loop allows the system to make necessary adjustments during the operation of the overall system or a specific sub-system. 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 13 Open Systems Open Systems do not have a feedback loop and require human intervention. Example: a microwave, which requires the user to input the appropriate time and determine if the food is prepared 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 14 Closed Systems Closed Systems apply feedback to manage and control the system. Example: a home heating system, which requires the user to input a desired temperature and uses a thermostat to collect feedback and turn the system on/off 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology Slide 15 Systems Theory Systems theory is the study of how things work and suggests that both natural and man-made systems have interrelated parts that work together to produce an output. All systems tend to have similarities in the way they work. The application of the systems theory can be applied to the engineering design process. 2013 International Technology and Engineering Educators Association, STEM Center for Teaching and Learning Foundations of Technology </p>

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