Grade 6 Social Studies builds on the foundational knowledge of civics, economics, geography, and history, gained in Grades K-5. Social studies skills move from basic to more sophisticated and are used in combination to access and comprehend social studies content. Students develop foundational knowledge regarding patterns of change over time and the ways people view, construct, and interpret history. The Grade 6 history strand focuses on World History from the beginning through the middle of the first millennium. The history strand in Grade 6 is organized chronologically using the Eras and time periods from the National Center for History in the Schools (NCHS). The civics, economics, and geography strands correlate to the historical eras.