The Digital Library for Earth System Education
(DLESE) is a distributed community effort involving educators, students and scientists working together to improve the quality, quantity, and efficiency of teaching and learning about the Earth system at all levels. DLESE resources include electronic materials for both teachers and learners, such as lesson plans, maps, images, data sets, visualizations, assessment activities, curriculum, online courses and much more. Sponsored by the National Science Foundation, DLESE is designed, built, and governed by community members from around the country. A core philosophy of DLESE is users-as-contributors. A newer feature of the data base is the ability to search by educational standards, including the National Science Education Content Standards and the National Geography Standards.