NCSI Talks


Princes and Princesses

Shodor > NCSI Talks > Vensim > Princes and Princesses

Princes and Princesses Model

What is this model?

This is a model of the interactions between five populations - princes, frogs, princesses, sleeping beauties, and witches. As the simulation runs, witches transform princes into frogs and princesses into sleeping beauties, while princes and princesses can transform their opposite number from a frog/sleeping beauty back into a prince or princess. The total number of princes and frogs, princesses and sleeping beauties, and witches are fixed; members of the populations can be converted to members of other populations, but there is no birth or death.

What can this Model be used to teach?

  • Understand the effect of each parameter on the outcomes for each population
  • Understand the effect and importance of the random element in calculating the next round
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