In this paper we give a brief overview of the ongoing development of Re-usable Learning Objects in mathematics and statistics at the National University of Ireland Maynooth. We focus on the materials that are being developed in collaboration with other third level institutions and supported by the NDLR. We briefly discuss how the topics were selected, the type of resources being developed, the technologies being used and how the resources can be integrated with the wide range of existing materials available. The resources are designed to complement, not replace traditional methods of teaching