Dive into a comprehensive two-hour lecture on the fundamental concept of order of operations with integers in prealgebra. Learn to solve complex mathematical expressions step-by-step, mastering the PEMDAS rule (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction) as it applies to whole numbers and negative numbers. Gain a solid foundation for more advanced algebraic concepts through clear explanations and numerous practice problems, all presented by the experienced Professor Leonard.