This document provides information about how historians study history. It explains that historians gather evidence from primary and secondary sources like artifacts, documents, photographs and written works to learn about the past. The document contains various activities for students, like bringing in an artifact from the past and answering questions about it to determine if it is a primary or secondary source. It also discusses how historians evaluate sources for accuracy and bias. They put events in chronological order using dates to understand what happened and when. Historians use tools like centuries, decades, A.D. and B.C. to measure and describe time periods.