Ucko, D.A., and Ellenbogen, K.M. (2008). Impact of technology on informal science learning. In D.W. Sunal, E. Wright, and C. Sundberg (Eds.), The impact of thelaboratory and technology on learning and teaching science K-16 (Ch. 9, pp. 239-266). Charlotte, NC: Information Age.
Ucko, D.A., Schreiner, R., and Shakhashiri, B.Z. (1986). An exhibit on everyday chemistry: Communicating chemistry to the public. Journal of Chemical Education, 63, 1081.
U.S. Congress. (1990). Children’s Television Act of 1990 (P.L. no. 101-437, 104 Stat. 996-1000).
Valente, T.W., and Saba, W. (1998). Mass media and interpersonal influence in a reproductive health communication campaign in Bolivia. Communication Research, 25, 96-124.
Valente, T.W., Kim, Y.M., Lettenmaier, C., Glass, W., and Dibba, Y. (1994). Radio and the promotion of family planning in the Gambia. International Family PlanningPerspectives, 20(3), 96-100.
Valente, T.W., Poppe, P.R., and Merritt, A.P. (1996) Mass media-generated interpersonal communication as sources of information about family planning. Journalof Health Communication, 1, 247-265.
Valente, T.W., Watkins, S., Jato, M.N., Van der Straten, A., and Tsitsol, L.M. (1997). Social network associations with contraceptive use among Cameroonian women in voluntary associations. Social Science and Medicine, 45, 677-687.
Vieth, E. (2001). Screening science: Contexts, texts, and science in fifties science fictionfilm. Lanham, MD: Scarecrow Press.
Wallace, R.M., Kupperman, J., Krajcik, J., and Soloway, E. (2000). Science on the web: Students online in a sixth-grade classroom. Journal of the Learning Sciences, 9(1), 75-104.
Walters, L.M., Wilkins, L., and Walters, T. (Eds.). (1989). Bad tidings: Communicationand catastrophe. Mahwah, NJ: Lawrence Erlbaum Associates.