Spatial abilities are used in many aspects of everyday life, thus developing these abilities should be one of the most important goal of Mathematics Education. These abilities should be developed starting with early school years, thus pre-school and primary school teachers have an important role in setting the foundation of these abilities. A teacher can successfully develop students' competencies/abilities if she/he possess those competencies/abilities. Thus evaluating and developing pre-service primary school teachers' spatial abilities is an important goal of their training. This paper presents a research on pre-service primary school teachers' spatial abilities. Students were tested using an online problem sheet and the results were quantitatively and qualitatively evaluated, trying to identify some common misconceptions. The results show the necessity of developing these students' spatial abilities. Based on the results, some hands-on activities and paper based problem types are proposed for developing students' spatial abilities.