Environmental Education (EE)
Environmental education aims to provide students with an understanding of environmental issues and how their actions impact the environment. Through this type of education, students gain the knoweldge and skills to make informed decisions. The EPA's environmental education page provides an excellent and to-the-point overview of the purpose and outcomes of environmental education.
Place-Based Education (PBE)
Place-based education uses students' own community as a locus for learning. Students can learn through local ecology, history, economy and any other aspects of their community. Place-based education can also engage students in the study of other cultures and communities through in-depth study of their locality. The Promise of Place website provides an excellent overview of PBE basics.
Project-Based Learning engages students in the process of inquiry in order to solve a problem or answer a question. Students respond to this problem or question by designing a project. A good primer on project-based learning can be found at the Buck Institute for Education's website.