She has been involved in open and distance learning since 1990. She teaches the modules Leadership, Management and Student Support in Adult Education and Instructional Techniques and Multimedia in Adult Education in the Postgraduate Diploma in Tertiary Education. Her current research interests include the gap-year phenomenon and support to higher education students studying through the medium of a second language. Marietha, who is also interested in assessment practices in higher education, is a qualified, registered assessor and moderator.