The need for more efficient and more effective teaching techniques led us to begin developing desktop Computer Aided Instruction (CAI) modules in 1993. The development and evaluation of two desktop CAI modules, Diodes and Diode Rectifiers, have been reported previously [1]. This paper presents our most recent development strategy for enhancing these materials and for converting them into a web-based format. Due to a disappointing experience with a commercial authoring package, our strategy changed to a start from scratch approach. This paper reports our development experience using inexpensive and easy to use web-based development tools, including cost and development time estimates. Results of an informal evaluation of the two webbased modules are also presented. Initial student response was very positive and encouraging overall, although several useful suggestions for improvements have been offered. Further refinement of these materials and a more formal evaluation of their impact on student learning similar are planned. We expect that the role and impact of these web-based modules will be similar to our findings with desktop CAI modules.
