This research explored the thesis that mental model construction can be an effective instructional strategy for mental models learning by constructing a prototype that embodies this approach. The mental model to be learned was the Internet, including the components of the Internet, their functions, and their relationships to one another. To do this, students were required to place the components of the Internet in their proper places and assemble the proper functions of each component. The model-assembly module was constructed as a computer-based training module, using Authorware authoring software. A group of 43 community college students in an "Introduction to Computers" course participated in a pilot test. Both the control group and the treatment group went through an instructional activity and a reassembly activity. In the instructional activity, the control group observed the model assemble itself, while the treatment group were required to drag each component to its correct location. Scores on a posttest and the reassembly activity were compared. Results indicate a better grasp of the model within the treatment group, as well as significant differences between age groups and between males and females. (MES)