A Digital Library Resource.
U.S. Geological Survey (USGS) Education
National Center for Case Study Teaching in Science
Digital Library for Earth System Education (DLESE)
NSDL's Collection of K-12 Resources.
SERC's Resources for K-12 Teachers
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PAESTA is funded by the National Science Foundation:
Award # DUE-0962792 & Award # GEO-0631377