摘要：The results of an investigation that aimed to identify the solidarity between the understanding of the lunar phase’s phenomena, Eclipses and the construction of spatial relationships, together with elementary school students are presented in this work. Twenty students enrolled in the 8th year of the public school system in an inner city of the São Paulo state, aged between 13 and 14 years, participated in this study. The instruments used were an interview based on the Piagetian clinical-critical method, about the occurrence of the Moon phases and Eclipses, and an operational test that investigated, through the shadow projection problem, the spatial relationships. The interviews answers revealed that most of the participants do not understand the investigated astronomical phenomena, and their ideas are not based on scientific aspects, prevailing conceptions that are very centered on their own perspective, without coordinating them in a spatial system of relationships. The application of the operative test revealed the prevalence of topological and Euclidean constructions, with some initial constructions from the projective space. Statistical analysis revealed a positive relationship between the data from the two instruments. Reflections are made on the implications for the teaching of Science, specifically Astronomy.
