This study investigated the effectiveness of an approach to information and media literacy instruction for elementary preservice teachers. The authors trained the participants in a systematic research process of searching for, evaluating, and using information resources, specifically journal articles and Websites, to increase their content knowledge. The results demonstrate the importance of formative assessment and the need to provide preservice teachers with information and media literacy training so they are better able to navigate and evaluate digital-age resources to expand their content mastery and teach their students 21st-century skills.