Students experimental competences are of most importance in engineering courses. However in post-Bologna courses, the number of contact hours and the actual extent of hands-on lab work were substantially reduced. Online resources usage (simulators and remote labs) has been growing up in the last decades, as more complex and versatile tools are being developed. Unfortunately, several of these usages reported in literature do not show the didactical backing that support these implementations. This work is a step forward, explaining how a teacher implemented a combination of online resources in order to develop experimental competences. The results show significant correlations between students’ usage of these resources and their calculus competences and final achievements.