Actual exercise is on page 5.  Besides what is discussed in this chapter, Flowcharts and Entity-relationship Diagrams are also useful models.
Chapter 5 of the textbook discusses:
5.1 Context models 5.2 Interaction models 5.3 Structural models 5.4 Behavioral models 
5.5 Model-driven engineering
Context modelling: what is (and is not) part of the system.

Process model of involuntary detention:

Interaction modelling:
Use case modelling:

Sequence diagrams:

Structural Models

Behavioral model: 
Data becomes available that has to be processed by the system. 
1.The availability of the data triggers the processing. 
2. An event happens that triggers system processing. Events may have associated data, although this is not always the case
Behavioral model: Data Driven
A blood sugar test motivates insulin

Behavioral model: Event Driven
A microwave

Software Engineering: Model Driven Activity
Below are five pretend modelling situations.  Start with the one that has been assigned to your group.  Continue until the end of class.  Be prepared to present your model in class on Monday. In each case, Draw a diagram. While all groups should draw a diagram, it is NOT necessary to use the exact style used by the book.  No special research is needed for fact finding. In the event that you finish, start with the next model in line.  
CONTEXT MODEL: Assume a campus club, such as Underwater Basket weaving.  Draft a Context Model.  What clubs/offices/systems/people does a campus club interact with? Draw a diagram.
INTERACTION MODEL: Assume a loan officer.  What actors/data etc. are relevant?  Present (using a table or chart) how the loan officer will (or should) make decisions. Draw a diagram.
SEQUENCE DIAGRAMS: Pick a major from among your group.  Draw a diagram for prerequisites.
STRUCTURAL MODEL: Assume a generic doctor office. Diagram how the different objects/agents interact.
BEHAVIORAL MODEL:  Organize your schedule for vacation.  Trigger events might include: Get hungry, get thirsty, get tired, get bored. Draw a diagram.

Your group should be ready to present next class meeting.