This document summarizes several management theories presented in a student group project. It discusses quantitative approaches including management science and operations management. It also outlines contingency theory, Herzberg's two-factor theory, McGregor's Theory X and Theory Y, Maslow's hierarchy of needs, and key concepts of systems theory including open vs closed systems, entropy, synergy, and subsystems. The document was submitted by a group of 6 BBA students to their management teacher.