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This paper focuses on the use of web-based technology in the course Introduction to Environmental Engineering (CE 280). An extensive website, web-based quizzes and homework assignments, and tutorials have been developed and are available on the course website (www.egr.msu.edu/classes/ce280). In 1999, web-based quizzes and tutorials were introduced. In 2001, homework assignments were computerized using the CAPA (Computer Assisted Personalized Approach) software developed at Michigan State University. As with the homework assignments, all examinations were individualized. After completing the CAPA examinations, the students were given their CAPA-correction examinations. The correction-examination followed the same format as the in-class examination except that the multiple-choice problems had a different selection of choices and the quantitative problems had different numbers. The students were required to complete the entire correction-examination in order to obtain additional examination points.