Outline:

1. Mini-quiz
2. An example program: a physics simulation
   • projectile position
   • inputs and initial state
   • updating the state (position and velocity)
3. Refactoring for modularity
   • using functions
   • Exercise 1
   • using a (not-yet-existing) Projectile class instead
4. Object-oriented programming (OOP)
   • the Projectile constructor: Exercise 2
   • updating the state, revisited: Exercise 3
5. Encapsulation and instance variables

Reading assignment (to be completed by the next class):

• expected: Zelle sections 10.2-10.5 (pp. 314-336)
• recommended: Zelle sections 10.6-10.8 (pp. 337-356)