“…Some emphasize dialogue (Abdu et al, this issue;Bell & Pape, 2012, Kazak et al, 2015Kolikant & Broza, 2011), others teacher strategies (Makar et al, 2015;Pfister et al, 2015;Stender & Kaiser, 2015), teacher practices (Abdu et al, 2015), or the specific nature of computer tools (Chase & Abrahamson, 2015;Kazak et al, 2015). The key idea behind the aforementioned artefacts (solution plans etc.)…”