1. FET college lecturers: the ‘devolving’ link in the South African skills development equation
2. The Concept of Accumulation in Calculus
3. Mofolo-Mbokane BLK. Learning difficulties involving volumes of solids of revolution: a comparative study of engineering students at two colleges of Further Education and Training in South Africa [dissertation]. Pretoria South Africa): University of Pretoria; 2011.
4. Rösken B, Rolka K. A picture is worth a 1000 words – the role of visualization in mathematics learning. In: Novotná J, Moraová H, Krátká M, Stehlíková N, editors. Proceedings of the 30th conference of the International Group for the Psychology of Mathematics Education; 2006 Jul 16–21. Prague (Czech Republic): PME. 4:457–464.