Basic concepts learned in school and how they are used at work.               Reading literature Writing concisely     Usefulness of Spanish     International trade and tariffs       Geography and culture     Fourier analysis Ratio Percent Matrices Linear Algebra Equations: Order of operations Using mathematics: U.S. Navy Working with formulas: U.S. Navy     Light and optical systems Ohm's Law, Resistance Electricity and electronics: Circuits Fiber optics Radar signals and the electromagnetic spectrum High-frequency communications   The treatment of academic concepts and skills in the Library of the Workplace is not intended to be a full coverage of the concept for instructional purposes. Some basic skills that are taught in the classroom may be located in the Work Skills Index.