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Topic: Interaction of system components 

Technology

 Standard 5.  Understands the nature and operation of systems
  Level I (Grade K-2)
   Benchmark 2.Knows that when parts are put together, they can do things that they couldn’t do by themselves
    Knowledge/skill statements
     1.Knows that each part serves a purpose
     2.Knows that some parts will not work on their own
   Benchmark 3.Understands how some elements of simple systems work together (e.g., people in a restaurant, parts of a bicycle)
    Knowledge/skill statements
     1.Understands the idea of a simple system
     2.Understands that people working together in a restaurant is an example of a simple system
     3.Understands that a bicycle is an example of a simple system
  Level II (Grade 3-5)
   Benchmark 1.Knows that when things are made up of many parts, the parts usually affect one another
    Knowledge/skill statements
     1.Knows that some things are made up of many parts
     2.Knows that parts usually have an affect on one another
  Level IV (Grade 9-12)
   Benchmark 1.Knows that a system usually has some properties that are different from those of its parts, but appear because of the interaction of those parts
    Knowledge/skill statements
     1.Knows that a system usually has some properties that are different from those of its parts
     2.Knows that the properties of a system appear because of the interaction of those parts
   Benchmark 5.Knows that even in simple systems, accurate prediction of the effect of changing some part of the system is not always possible
    Knowledge/skill statements
     1.Understands the limitations of predicting effects of system changes
 Standard 6.  Understands the nature and uses of different forms of technology
  Level II (Grade 3-5)
   Benchmark 8.Knows that buildings require several subsystems (e.g., a phone system, heating) and these subsystems may be associated with other types of technology (e.g., communications, energy)
    Knowledge/skill statements
     1.Knows that buildings require several subsystems
     2.Knows that a phone system is a subsystem that most buildings require
     3.Knows that a heating system is a subsystem that most buildings require
     4.Knows that building subsystems may be associated with other types of technology
     5.Knows that building subsystems may be associated with communication technology
     6.Knows that building subsystems may be associated with energy technology