Video Description:  How does NASA test ideas, like the Mars Helicopter, before they are even built? Find out more about this revolutionary helicopter and how NASA uses mathematical modeling to turn complex ideas into solvable equations that help shape future missions. Video Length:  3:20.NASA eClipsTM is a suite of online student-centered, standards-based resources that support instruction by increasing STEM literacy in formal and nonformal settings.  These free digital and downloadable resources inform and engage students through NASA-inspired, real-world connections.NASA eClips Real World segments (grades 6-8) connect classroom mathematics to 21st Century careers and innovations.  They are designed for students to develop an appreciation for mathematics through real-world problem solving.