The aim of this study is to analyse the impact of the shared use of the interactive whiteboard (IWB) on the perceptions, learning processes and performance of learners. It was carried out with lower secondary school students within the context of a class on dynamic geometry. The work is based on a set of indicators and the results were obtained from quantitative data, which was collected through a written questionnaire, and from qualitative data, which was collected through encoded video recordings. These results show that sharing the use of the interactive whiteboard has an impact on the perceptions of learners in terms of the usability and usefulness of the tool, that it encourages interactions between the students and that it seems to have a positive effect on the efficiency of the learning sequence itself.