National Environmental Education Week April 15-21....

From the Digital Library for Earth System Education (DLESE): 

National Environmental Education Week is April 15-21, with a goal of enhancing the educational impact of Earth Day, creating a full week of learning and activities in K-12 classrooms, nature centers, zoos, museums, and aquaria. The 2012 theme is Greening STEM: The Environment as Inspiration for 21st Century Learning. EE Week is partnering with National Geographic Education and Project Noah to bring educators the information and tools they need to take technology outside, engaging students in STEM (science, technology, engineering and math) learning in their own schoolyard or local public land.

More Earth Day 2012 info