This was a Research and Development study aimed to develop practical learning media in the forms of a trainer and a module for Electronics Engineering Education students in Analog Electronics II Practicum course. The R&D model applied in this study consisted of four phases: assessment/analysis, design, development, and evaluation. The trainer as an object media consisted of: 1) a circuit blok, including (a) a voltage feedback, (b) a phase-shift oscillator, (c) a regulated power supply, and (d) a wien-bridge oscillator; 2) a reverse engineering block; 3) a project board block; and 4) a power block. Meanwhile, the text media were modules containing both the materials and the jobsheets about the practicum manual, and consisting of specific sub-chapters on how to develop the 4Cs of the 21st century skills. The trainer performance showed that all blocks in this media were functioning properly. The feasibility of this media was rated 3.3 (highly feasible), 2.97 (feasible), and 3.3 (highly feasible) by the media experts, the material experts, and the users respectively. These results indicated that the trainer was ready to be used in helping the students to understand the materials and to develop the 21st century skills, namely critical thinking and problem solving, creativity, communication, and collaboration.