Environmental Inquiry is a powerful, four-branch framework that combines Inquiry-based Learning, Experiential Learning, Integrated Learning, and Stewardship in a dynamic process. It is based on a transformative vision of education, one that seeks to develop not only skilled and knowledgeable students, but also, environmentally and socially-conscious world citizens. This resource offers elementary school teachers clarity, reassurance, and options for putting Environmental Inquiry into practice. It serves as a guide for teachers who are looking for a powerful way to make both the content and process of learning about the world more engaging and relevant to their students. This change is possible when students become personally invested in a process that is shaped by their very own questions and theories about the world -- their natural curiosity -- and a process that places them in direct contact with the natural environment.