The learning process in the digital era prerequisites of the need for and importance of the role of electronic teaching materials in blended learning. This study attempts to answer these needs with the aim of developing electronic teaching materials oriented by metacognitive skills. The development of electronic teaching materials is carried out with seven stages of development research ranging from needs analysis to trials and product revisions. The research data were collected using questionnaire techniques and field notes which were analyzed with descriptively qualitatively and quantitatively descriptively to determine the qualifications of the feasibility of the product from the experts and users. The product trial results show that electronic teaching materials are realized in electronic modules, mobile applications, and interactive flash achieve decent qualifications in terms of content, operational standards, and applicability. Students as users feel that learning with electronic teaching materials oriented by metacognitive are more directed and comfortable in online or offline learning. This result shows that electronic teaching materials can optimize the implementation of blended learning.