This full-color poster shows a simplified geologic map of Texas created for classroom learning and general interest. The map highlights the major rock types and geologic regions of the state, helping viewers see how Texas was formed over hundreds of millions of years. Alongside the map is a geologic time scale arranged by Age, Era, Period, and Characteristic life, which connects the rocks on the map to Earth’s history and the plants and animals that lived at the time. Together, the map and time scale help students understand how Earth changes through time and how those changes shaped Texas’s landscapes, resources, and ecosystems, making geology approachable, visual, and engaging for all learners.