vii Together, We Build Careers At Goodheart-Willcox, we take our mission seriously. Since 1921, G-W has been serving the career and technical education (CTE) community. Our employee-owners are driven to deliver exceptional learning solutions to CTE students to help prepare them for careers. Our authors and subject matter experts have years of experience in the classroom and industry. We combine their wisdom with our expertise to create content and tools to help students achieve success. Our products start with theory and applied content based upon a strong foundation of accepted standards and curriculum. To that base, we add student-focused learning features and tools designed to help students make connections between knowledge and skills. G-W recognizes the crucial role instructors play in preparing students for careers. We sup- port educators’ efforts by providing time-saving tools that help them plan, present, assess, and engage students with traditional and digital activities and assets. We provide an entire program of learning in a variety of print, digital, and online formats, including economic bundles, allowing educators to select the right mix for their classroom. Student-Focused Curated Content Goodheart-Willcox believes that student-focused content should be built from standards and/or accepted curriculum coverage. Course standards from around the country were used as a foundation in this text. Modern Commercial Wiring also uses a building-block approach with attention g devoted to a logical teaching progression within its chapters. Content is bro- ken into small, focused chapters that help students master concepts quickly. We call on industry experts and teachers from across the country to review and comment on our content, presentation, and pedagogy. Finally, in our refi of curated content, our editors are immersed in content checking, finement securing and sometimes creating fi gures that convey key information, and fi revising language and pedagogy. G-W Integrated Learning Solution