TechXcite is an engineering-focused, discovery-based after-school science, technology, engineering, and math (STEM) program. The free curriculum is downloadable from http://techxcite.pratt.duke.edu/ and is comprised of eight Modules, each with four to five 45-minute activities that exercise the science and math learned in school by using engineering principles to build products or learn processes that improve the quality of life. Ninety-eight percent of TechXcite instructors indicated that students learned and demonstrated improved competence in science and engineering. TechXcite Modules include building prosthetic arms, infrared remote controls, solar-powered cars, harvesting rain water, and imaging biological systems.