By Freeman John G.   Marx Ronald W.   Cimellaro Luigia   in Journal of Science Teacher Education

ISSN:1046-560X|15|2|111-131

Springer Publishing Company ‎(2004)‎

Access to resources Favorite 8.017933

By Fortus David   Krajcik Joseph   Dershimer Ralph Charles   Marx Ronald   Mamlok Rachel   in International Journal of Science Education

ISSN:1464-5289|27|7|855-879

Routledge Ltd‎(2005)‎

Access to resources Favorite 6.4143467