Evaluation is important. As the sea of information grows ever larger, educators must be able to teach their students to evaluate what they find and decide its relevance and accuracy. In the American Association of School Librarians' publication "Standards for the 21st Century Learner," evaluation is a skill (1.1.4, 1.1.5), a disposition in action…

Using primary sources such as a photograph from the Library of Congress American Memory collection engages learners to think about the past and relate it to their life today. Some artifacts come with an explanation, while some do not. These require critical thinking and investigation to locate information and hypothesize answers to questions posed…