The document discusses behavioral science, cognitivism, and the system approach in education. It defines key concepts like cybernetics, instructional systems, and compares the behavioral science and cognitivist approaches. The behavioral science views human behavior as predictable responses to environmental stimuli, while the cognitivist approach sees behavior as reflecting underlying mental processes and takes into account thinking, memory, and problem solving. The system approach provides a framework for understanding, controlling, and improving educational structures and processes to effectively achieve instructional objectives.