Presenting a case study, this program teaches how an experiment can be designed to test the effects of two independent variables. It also looks at how mathematical formulas can be derived from experimental measurements.

Originally released by Rees Films, 2008. Streaming video file encoded with permission for digital streaming by Infobase on May 24, 2018.

Mathematical Relationships (1:49); --Measurement and the Search for Relationships (1:32); -- The Effect on T of Mass (First Independent Variable) (4:47); -- Spring Stiffness (k) (1:54); -- The Effects on T of Spring Stiffness (second independent variable) (2:34); -- Combining Two Relationships (2:24); -- Writing Your Report (4:08); -- Credits: Measurement and the Search for Relationships (0:33);.