On line experiments-the results of the Online Widener Laboratories

The Online Widener Laboratories (OWL) provide an interactive online experience that is used in several web-enhanced courses. The extensive use of Java applets for complex simulations allows for 24/7 availability and multiple simultaneous users using a moderately sized server. This system has been used to supplement both laboratory courses and conventional lecture based courses. In the laboratory courses, the online system provides an interactive experience to help students organize data and plan their experiments and analytical approach. In lecture courses, this system allows for interactive homework assignments that simulate real world problems. Students´ responses have been generally positive. Measurements of the systems effectiveness include time-savings in the actual laboratory and student evaluations and measures of time spent working modules. Also, evidence suggests that students use the web-site on their own to study topics not required for their particular course.