This document is a laboratory manual for an undergraduate physics course at Purdue University, the major goals of which are to develop students' laboratory skills, to illustrate principles and phenomena described in the physics lectures, and to promote conceptual change about the major topics in Newtonian mechanics. A hardware and software guide and a laboratory report guide are included in the manual. Experiments in the manual include: (1) "Measurement Uncertainty and Propagation"; (2) "Introduction to Computer Data Acquisition and Relationships between Position, Velocity, and Acceleration"; (3) "Newton's Second Law, Work, and Kinetic Energy"; (4) "Graphical Analysis and Least Squares Fitting"; (5) "Conservation of Mechanical Energy"; and (6) "Simple Harmonic Motion and the Torsion Pendulum". (JRH)