P: two years of high school algebra or M014, and one year of high school geometry. A025 is a self-taught version of M025. Although there are no formal lectures, free tutoring is available at various times during the week. Students will buy a CD ROM, not a text. The required work may be done on any campus computer cluster, or possibly on a personal computer in a dormitory. Class meets once a week for quizzes or exams.