1. Müller, H. M. (2001). Peer assessment of data handling (Grade 5’s) (poster). In M. Van den Heuvel-Panhuizen (Ed.), Proceedings of PME 25 (Vol. 1, p. 409). Freudenthal Institute, University of Utrecht, The Netherlands: PME.
2. Scott-Wilson, R., Wessels, D. C. J., Wessels, H., & Swart, E. (2017). Hidden benefits of modelling for students with disabilities. In G. A. Stillman, W. Blum, & G. Kaiser (Eds.), Mathematical modelling and applications: Crossing and researching boundaries in mathematics education (pp. 455–465). Cham: Springer.
3. Wessels, H. (2011). Using a modelling task to elicit reasoning about data (paper). In A. Rogerson & L. Paditz (Eds.), The Mathematics Education into the 21st Century Project. Turning Dreams into Reality: Transformations and Paradigm Shifts in Mathematics Education. Proceedings of the 11th International Conference. Grahamstown: Rhodes University.
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4. Wessels, H. (2017). Exploring aspects of creativity in mathematical modelling. Nov 2015. In G. A. Stillman, W. Blum, & G. Kaiser (Eds.), Mathematical modelling and applications: Crossing and researching boundaries in mathematics education (pp. 491–501). Cham: Springer.
5. ICME-13 monographs;HM Wessels,2018