Basic Algebra with Applications is a college-level elementary algebra textbook intended for an introductory course in algebra. It covers the most basic algebraic concepts, including axiomatic approach, linear equations, graphing, linear systems, polynomial equations, rational expressions, radicals, and the quadratic formula. This textbook is free and open-source: the text is distributed under Creative Commons BY-SA, and the full LaTeX source code is distributed under GPL.
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Additional teaching aids are also available (ZIP with PDFs). More than 40 short quizzes are intended to be given out during class for group work and/or discussion. They follow the text very closely, alsmost section by section. They are also class-agnostic, and can be used as either true quizzes or as worksheets.
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Contributions of all kinds are welcome. Developers are invited to browse the source code repository (git) and contact the maintainer with comments and/or requests. The contact info can be found within the text.