Context: The type of course: Introductory statistics. Covers contents typical to an introductory statistics course. The majority of students are business majors (75%). The rest are from a variety of departments other than Science & Technology. Most students are junior, age ranging from 20 to 25. They are full time students, but many of them have some part time job. For each semester, we have about 400 to 500 students. Their background is usually weak. Less than 10 percent of students had pre-calculus.