This presentation provides an overview of object-oriented programming (OOP). It discusses key OOP concepts including objects, classes, encapsulation, inheritance, polymorphism, and message passing. Objects are instances of classes that contain both data and behaviors. Classes define common properties and methods for objects. Encapsulation binds data and functions together, while inheritance allows classes to inherit properties from parent classes. Polymorphism allows the same message to be interpreted differently. Message passing facilitates communication between objects.