  The online tutoring system CAPA was implemented at Afeka College in the
academic year 2000-2001 in calculus based physics courses. It was used also in
the academic year 2001-2002 and was very successful in improving understanding
and achievements of the students. The paper describes the system features and
the case study of its implementation. Lessons drawn from use of the CAPA system
are discussed. The system no doubt contributed significantly to increased
understanding and higher achievements in the final exams. This was at a price
that students felt that they had to devote more time to study than
traditionally required. The instructor has to invest more time than
traditionally done in composing new problems and managing the system. However,
the increased interaction with the students makes the teaching process much
more interesting and rewarding.

Physics Education