In this study, a new multimedia learning tool for physical chemistry was implemented in a class setting, and students' attitudes and learning gains examined. The Physical Chemistry in Practice (PCIP) DVD contains multimedia modules that provide an in-depth description of the research of eight different scientists. Each module contains a documentary style video program of the researcher and their laboratory, HTML-based background information about the topic, problems for students to work on, and links to related information. The DVD was implemented in a physical chemistry laboratory course where students worked through a module on surfaceenhanced Raman spectroscopy (SERS). Data was collected in the form of pre-and post-tests of content knowledge and surveys about attitudes and academic career choices. Students showed statistically significant learning gains after using the DVD and showed an increase in their recognition of the applications of physical chemistry to real problems. Students also showed an increased interest in further study of physical chemistry. [Chem.

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This exploratory study investigated an online office hour and a face-to-face recitation for similarities and differences. The online office hour and face-to-face recitation were a part of general chemistry courses taught at different universities. The courses covered the same material at the same level. The results of the investigation revealed that in the online environment students must articulate their ideas clearly to convey them in a text-only medium. The written text seemed to help the instructor to identify misinterpretations made by the students. The instructor-dominated hierarchy between instructor and student is present in both environments. When comparing the percentage of total student and instructor events (the sum of questions and statements) in the online environment, students' events were significantly greater than instructor's events. This finding is an indication that the online environment shows promise for improving student participation. KeywordsOnline learning, Scientific discourse, Computer aided education, Synchronous communication Abstract This exploratory study investigated an online office hour and a face-to-face recitation for similarities and differences. The online office hour and face-to-face recitation were a part of general chemistry courses taught at different universities. The courses covered the same material at the same level. The results of the investigation revealed that in the online environment students must articulate their ideas clearly to convey them in a text-only medium. The written text seemed to help the instructor to identify misinterpretations made by the students. The instructor-dominated hierarchy between instructor and student is present in both environments. When comparing the percentage of total student and instructor events (the sum of questions and statements) in the online environment, students' events were significantly greater than instructor's events. This finding is an indication that the online environment shows promise for improving student participation.

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