Were you looking for the book with access to MasteringPhysics? This product is the book alone and does NOT come with access to MasteringPhysics. Buy or rent the book and access card package to save money on this resource. Walker's goal is to help students make the connection between a conceptual understanding of physics and the various skills necessary to solve quantitative problems. The pedagogy and approach are based on over 20 years of teaching and reflect the results of physics education research. Already one of the best-selling textbooks in algebra-based physics, The Fourth Edition strengthens both the conceptual foundations and the tools for problem solving to make the book even better suited to today's students.