The document provides guidance on using primary sources to enhance teaching. It outlines goals of understanding how to use primary sources, analyzing primary sources by observing, reflecting and questioning, and learning to locate primary sources on the Library of Congress website aligned with standards. Activities described include participating in a "Crop It" activity where teachers analyze photos by cropping out different details, and a "Zoom In" activity where a photo is analyzed in stages as more is revealed. Strategies are presented for integrating primary sources into different grade levels from family history to national history.