Open educational resources (OER) play an important role in teaching and learning, especially in lifelong learning. Educational resources should be created in a way that addresses lifelong learners’ needs. Human-centered design (HCD) is a design perspective and an iterative process that involves users in all phases of the process. Thus, an HCD approach can provide relevant advantages when creating OER for lifelong learning. This work presents the Design Toolkit as a case study of digital open educational contents for design education that has been created following an HCD process. The orientation of the Design Toolkit is to provide users OER in a tool format rather than in a traditional manner. The main goal of this research is to contribute to the understanding of how HCD impacts OER creation. The research focuses on teachers, assessing the Design Toolkit content organization and analyzing teacher adoption and usage of the resources. The HCD approach fosters teachers’ satisfaction, promotes OER adoption and provides new design requirements for a future iteration of the HCD process. The results show that designing OER involving users through an HCD approach sets the focus adequately on their needs and limitations. Teachers feel satisfied with the Design Toolkit, fostering the adoption of OER in different educational contexts. Finally, users’ involvement in the whole HCD process points out design and educational requirements for future work.

Learning-by-doing is a pedagogical approach that helps in learning skills through practice. An online learning-by-doing tool, CodeLab, has been introduced to students undertaking the digital design and creation bachelor’s degree program at the Universitat Oberta de Catalunya. The tool has been used to facilitate and engage students, not well-acquainted with problem-solving techniques, in an introductory programming course. The aim of this study was to examine the factors that play vital roles in students’ acceptance of learning-by-doing tools that facilitate the development of problem-solving skills. The Unified Theory of Acceptance and the Use of Technology (UTAUT) model was used for this purpose and extended by adding the factor of motivation, which is essential for educational contexts. The results highlight that there is a strong relationship between acceptance and motivation, implying that students would use online learning-by-doing tools, such as CodeLab, depending on the amount of motivation and engagement while practicing the learning activities. A positive relationship between motivation and acceptance clearly supports the primary aim of using learning-by-doing tools in problem-solving courses.