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Learn how mathematical relationships can be investigated experimentally and how to write the report. This program uses case studies to show how the physical world can be described by mathematical relationships. It specifically demonstrates how an experiment can be designed to test the effect of two independent variables and how mathematical formulae can be derived from experimental measurements. This program also outlines how to prepare a report for an experiment. Program chapters include: (intro, investigation, effect on T of mass, effect on t of oscillation amplitude, measuring spring stiffness, effect on T of spring stiffness and the search for a constant).