Concepts relating to outer space are difficult to grasp because we lack direct experience of this environment. We analysed students' understanding of gravitation on Earth and beyond by testing the effect of training on it. In a pretest (T1), 28 seventh graders answered a questionnaire about space concepts. They all then underwent the same formal…

This paper examines the knowledge construction processes involved when grades 7 and 8 South African students learnt about the concept of gravity while visiting an astronomy-related science centre. The literature on students' understanding of gravity identifies a number of alternative conceptions prevalent, several of which are mirrored in this…