In this paper we present an analysis of the development process of technology-supported didactic material. Such analysis considers didactic materials as the conjunction of contents and instructional design used to guide learning and teaching processes. And we examine why several features such as reusability, semantic interoperability and collaboration support must be ensured from the earlier stages of the material creation process. For those reasons didactic material development is not a trivial task and demands of a development methodology support and a high-quality authoring environment. We describe how the MD2 research project provides an integrated solution for creation of didactic materials that take into account those rationales. The MD2 solution is based on two approaches first, the definition of a method for the collaborative creation of didactic materials and second, the elaboration of a quality evaluation framework for a priori testing of educational products. We also present CASLO a collaborative authoring tool used to facilitate these endeavors.