This learning resource focuses on the history and geography of Texas. Students are introduced to the concept of historical eras, specifically the first era, 'Natural Texas and Its People', which examines the time before European settlement when Indigenous peoples inhabited the state. The resource outlines the four natural regions of Texas: Coastal Plains, North Central Plains, Great Plains, and Mountains and Basins, providing descriptions of each region's geography and ecology. Activities include defining 'Era', connecting regions to their characteristics, and analyzing how geography affects lifestyle and settlement. Students will engage in mapping exercises and reflective writing to deepen their understanding of how these regions influence human activity.