“…Added to this, learners have to share enough common ground so that it is possible to form shared knowledge and to handle tensions of opposite and critical views fruitfully (see Brown & Campione, 1994). In other words, instead of reaching unanimity, the aim is to support critical discussion and evaluation of alternative views through careful guidance by the teacher (Dillenbourg & Jermann, 2007;Doise & Mugny, 1986;Kollar, Fischer, & Slotta, 2008;Lahti, Eteläpelto, & Siitari, 2004;Mercer & Littleton, 2007;Moran & John-Steiner, 2004;RojasDrummond, Mazon, Fernandez, & Wegerif, 2006;Wegerif, 2005). Moreover, creative collaboration requires an emotionally safe atmosphere and the provision of a respectful environment in which differences are critically engaged, but not in a disputational way (Eteläpelto & Lahti, 2008;.…”