This discussion article addresses the nature of models used in hydrology. It proposes a minimalist classification of models into two categories: models built on data from observations of the processes involved, and those for which there are no observation data on any of these processes, at the scale of interest. (LZ)

In keeping with the trend toward active, participative learning, observation projects for speech communication students can allow them to experiment with designing and carrying out a study of human communication. Students can be encouraged to look at the dynamics of a church congregation, a courtroom, a pre-game football huddle, or an office, and…

This study investigated the effect of singing within the elementary school music classroom on (1) students' preference for one of two performances of the same song and (2) students' ideas of "correct" performance. Seventy-five third and fourth graders were concurrently involved in separate experimental groups. One group was taught to sing…