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This text is written for the introductory algebra course offered at both two- and four-year colleges. At four-year schools look for this course in developmental studies programs. The focus of this new series by Hutchison and Hoelzle is to make students better problem solvers. To accomplish this goal, the authors emphasise conceptual understanding. They ask students to critically to explore and explain concepts in writing, and to extend their understanding through group activities. The environmental essays that open each chapter connect algebra to real world problem solving and can be used to stimulate class discussion and promote collaborative learning.