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Get a Grip! is a problem-based unit that places middle school students in the role of engineers who are challenged to design and construct prosthetic arms for amputees in a war-torn country. The students use common materials to build arms that accomplish tasks requiring fine motor control and strength. A critical component of the unit is its ability to demonstrate to middle school students that strong, interdisciplinary knowledge is required to solve engineering problems. As such, it is a practical and efficient mode of interdisciplinary instruction meeting state and national standards in science, math, reading, and social studies. This sample chapter also includes the Table of Contents, Introduction, and Index.