“…Indeed, the nature of what is learnt seems to depend on the way the students consider the knowledge at stake, and on the learning posture which follows from that: this can be seen with the example of the basic concepts of electromagnetism, and other studies have illustrated it with the examples of the theory of evolution (Hrairi & Coquidé, 2002), volcanism (Chartrain, 2003) and the vegetal production by photosynthesis (Catel, Coquidé & Gallezot, 2002). This need to take into consideration a multi-dimensional subject in the Science Education research is not yet highly emphasized, even if it has been discussed in other articles (for example Alsop an Watts, 2003;Caillot, 2001;Pintrich, Marx and Boyle, 1993;Strike and Posner, 1992).…”