This work investigates the efficacy of software simulations of electronic circuits laboratories to support beginning electrical engineering students. Experiment 1 was a formative evaluation of an Electronic Laboratory Simulator (ELS), as an optional add‐on to physical labs for 120 subjects at four universities. All subjects received the same treatment: their normal classes and physical labs, with optional use of simulated labs. Subjects took written tests specific to the lab's content, before and after using each simulated lab. Only subjects who took both pre‐ and post‐tests were included. Pre‐ and post‐test comparisons indicated significant improvement in both theory and lab knowledge when scores for all labs were combined, but inconsistent performance on individual labs. As the treatment included other learning opportunities in addition to simulated labs, the results were not attributed to the simulations, but provided initial indications and qualitative data on subjects' experiences. These helped to improve the labs and the implementation strategies. Experiment 2 used 40 college sophomores in a beginning electronic circuits lab. Physical lab subjects received seven physical labs. Combined lab subjects received a combination of seven simulated labs and two physical labs. The latter repeated two of the simulated labs to provide physical lab practice. Both treatments used the same assignments. Learner outcome measures were: (a) time required to complete a new criterion physical lab; (b) score on written lab and theory tests over all the labs; and (c) comments on the lab experience. The group that used combined simulated and physical labs performed significantly better on the written tests than the group using entirely physical labs. Both groups were equivalent in time to complete the criterion physical lab. Comments about the simulated labs were generally positive, and also provided specific suggestions for changes.
This paper describes the creation and testing of computer‐simulated laboratories for use in undergraduate engineering education. The design and implementation of a ‘virtual laboratory’ that closely mimics the capabilities of a physical laboratory is explained. Experiments that compare time and learning gains of students using physical and virtual laboratories are discussed. Experimental results indicate that students who use the virtual laboratory prior to a physical laboratory are able to complete the physical laboratory in a much shorter time, require less assistance, and also report that they are very satisfied with their laboratory experience.
This paper describes a model for implementing on‐line learning in engineering education. Relationships between traditional learning strategies and network‐enabled engineering education are discussed. The model proposed is based on a World Wide Web implementation that includes presentation materials, on‐line conferencing, demonstrations, and interactive capabilities that permit computer‐mediated question and answer sessions. An example of a course implemented using these techniques for a first year engineering course is given. Guidance for engineering educators who wish to implement components of the model is provided.
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