I S1 Lesson3 Solution Sketch

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  • 1. From employee’s perspective <econ ag> recipient <econ ag> Employee School provider provider recipient <econ res> <decrement> <increment> take Money Pay Buy educ. <econ res> give dual Lessons consumes <decrement> <increment> Cons less Learn lang produce <econ res> consumes <decrement> Time Cons time <econ res> Language skill consumes <econ res> <decrement> Attention Cons attent
  • 2. From employee’s perspective <econ ag> recipient <econ ag> Employee School provider provider recipient <econ res> <decrement> <increment> take Money Pay Buy educ. <econ res> give dual Lessons consumes <decrement> <increment> Cons less Learn lang take produce <decrement> Use labour <econ res> use Labour <increment> <decrement> Get salary dual Sell labour give
  • 3. Which are value objects? •Reminders •Goods •Quotations •Money •Acknowledgements
  • 4. <econ res> <econ res> Goods Raw material consume <decrement> <increment> Cons raw mat Produce goods produce <decrement> use <econ res> Produce garbage Garbage <econ res> <decrement> produce consume <increment> Removal service Consume garbage Remove garbage Removal service take Note that garbage is <increment> <econ res> <decrement> give viewed as Buy Removal Cash Pay for service having service negative value
  • 5. From advertiser’s perspective <econ ag> recipient <econ ag> Advertiser Radio station provider provider recipient <econ res> <decrement> <increment> take Money Pay Buy ad space. <econ res> give dual Ad space consumes <decrement> <increment> Cons less Get attention produce <decrement> Use commercial <econ res> Attention use <econ res> Commercial