Vol. 37 No. 2 (2019)

Research articles

• Investigating possibilities of predictive mathematical models to identify at-risk students in the South African higher education context

  Vaughan van Appel, Rina Durandt

  1-15

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• Engineering students' actions in a mathematical modelling task: Mediating mathematical understanding in a computer algebra system

  H Kotze, E D Spangenberg

  16-34

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• Reading skills can predict the programming performance of novices: an eye-tracking study

  35-52

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• Tutors' views on the integrated tutor model in open distance learning

  C H S Ntuli, Mishack T Gumbo

  53-66

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• The affordances of project-based learning and classroom action research in the teaching and learning of Natural Sciences

  Josef de Beer

  67-79

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• A comparative analysis of virtual and traditional laboratory chemistry learning

  Mafor Penn, Umesh Ramnarain

  80-97

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• School leadership practices for science and mathematics in high-stakes testing environments: An integrated school leadership approach

  Maria Tsakeni, Loyiso Jita

  98-109

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• Enhancing visual literacy in the mathematics classroom: the case of Dar es Salaam

  Hanlie Botha, Sonja van Putten, Imani Kundema

  110-123

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• Teachers' use of verbal language to evoke visualizations in multilingual mathematics classes

  Clemence Chikiwa, Marc Schäfer

  124-140

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• An investigation of how 7th grade and 8th grade students manipulate mathematical writing elements

  Byung-In Seo

  141-159

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