xiii Copyright Goodheart-Willcox Co., Inc. Amplify A Your Learning Content is presented in an easy-to-comprehend and relevant format. Activities relate everyday learning to enable you to experience real-life situations and challenges. • Each chapter opens with a pretest. The pretest will help you evaluate your prior knowledge of the chapter content. • Each chapter also concludes with a posttest. The posttest will help you evaluate what you have learned after studying the chapter. • The Essential Question at the beginning of each section will engage you as you uncover the important points presented in the content. • Research skills are critical for success in college and career. Internet Research activities at the end of each chapter provide opportunities to put them to work. • Event Prep presents information to use when preparing for competitive activities in career and technical student organization (CTSO) competitions. • IC3 objectives covered in the chapter are outlined at the beginning. This provides an overview of the certifi cation material covered in the chapter. • IC3 objectives are called out within the chapter where the material is covered. This allows you to focus learning on specifi c certifi cation content.