Learning Objects (LOs) are one of building blocks of Information and Communication Technology (ICT) supported learning. ICT support can be used in the traditional face-to-face model, in a completely online situation or in a hybrid (blended) style. The development of LOs is time and resources consuming, for this reason, it is important that they can de shared and reused. This paper addresses the use o Concept Maps (CMaps) to model topics that make up the area known as Linear Time-Invariant

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... s (LTI Systems) as taught in some engineering curricula. The CMaps are used to define the granularity of Learning Objects (LOs) in this area. It also addresses the deployment of a Blended Learning Signals and Systems course that is mandatory in five undergaduate curricula. The CMaps are used to define "regions" of related LOs that are used in the guide (story board) of this course. The LOs are among the digital resources to be used. The results of this work allow future extensions in terms of examining the syllabi of the undergraduate courses that teach LTI Systems and of developing additional blended learning courses. Results are presented and future developments are also considered.