3.1.1 Web-Based Instruction Programs. A WBI program was created containing materials fromthe Computation and Algorithms module. The program included about 75 pages and the content was divided into six sections. Interface elements included (a) a title bar located at the top of the screen showing the section name being viewed, (b) a control panel with choices for menu, map, index, and the other available sections, and (c) the main body of the tutorial, providing referenced links and subject categories for selection. Figure 1 shows the screen design of this WBI program.