Hollweg, Karen S.

Are we making a difference? : = lessons learned from VINE program evaluations / by: North American Association for Environmental Education.; Hollweg, Karen S. (Language materials, printed)

Understanding urban ecosystems = a new frontier for science and education / by: Berkowitz, Alan R.; Hollweg, Karen S.; Nilon, Charles H., (1956-); NetLibrary, Inc.; Cary Conference (1999 :) (Language materials, printed)

Understanding urban ecosystems = a new frontier for science and education / by: Berkowitz, Alan R.; Hollweg, Karen S.; Nilon, Charles H., (1956-); SpringerLink (Online service); Cary Conference (1999 :) (Language materials, printed)

What is the influence of the National Science Education Standards? = reviewing the evidence, a workshop summary/ by: Hill, David.; NetLibrary, Inc.; Hollweg, Karen S.; National Research Council (U.S.); National Research Council (U.S.)., Center for Education.; National Research Council (U.S.)., Division of Behavioral and Social Sciences and Education.; National Research Council (U.S.)., Steering Committee on Taking Stock of the National Science Education Standards: The Research.; What is the influence of the National Science Education Standards? ((2002 :); National Research Council (U.S.)., Committee on Science Education K-12. (Language materials, printed)

Understanding urban ecosystems : = a new frontier for science and education / by: Berkowitz, Alan R.; Nilon, Charles H., (1956-); Hollweg, Karen S.; Cary Conference (1999 :) (Language materials, printed)