What are primary sources & secondary sources? How can they help with understanding parts of the history of North Carolina? Objective I can explain what primary and secondary sources are. I can explain how primary and secondary sources help me to understand historical events. Background This lesson is the last of three that are intended to help students understand the different types of human migration and how it impacted the roles of different minority groups. In this lesson, students will look at primary and secondary sources to compare historical events. Students will learn about people asso Duration: 30 Minutes.