This document provides an introduction to the InTeGrate project, which aims to improve earth science education through the development of open-access curricular materials. It discusses how InTeGrate materials are created through a collaborative process involving instructors from different institutions and disciplines. It also describes how the materials are designed according to a rubric to ensure they engage students in solving real-world problems, use evidence-based practices, and are adaptable by instructors. Additionally, it notes how the associated website provides access to over 180 individual activity pages aligned with earth science disciplinary core ideas, crosscutting concepts, and science practices.