text_1: Integrating classroom-based collaborative learning with Web-based collaborative learning leads to subpar class performance
text_2: They can repeat, interrupt, and resume at will, which may have particular advantages for weaker students  Economies of scale —Once an application has been set up, the incremental cost of offering it to additional students is relatively small  Competitive advantage —Potential applicants may use the quality of information technology to discriminate between medical schools.