This work illustrates the design and pedagogical effectiveness of a gadget for a better teaching–learning process. The gadget was designed for teaching the basic concepts of heat transfer by conducting experiments, increasing the students' engagement in hands-on practices, developing the team spirit by making them work in a group and attracting students toward a career in mechanical engineering. Five possible experiments with the help of developed gadget are described. A survey was carried out among students and teachers of different levels using a set of written questions and statements in a feedback form. Participants involved in this survey were from seven different institutions. Feedback from the participants provided important information related to the gadget, viz., its pedagogical usefulness and required modifications in the gadget. The enthusiasm of the participants toward hands-on activities was revealed through the survey. A study for assessing the impact of pedagogical gadget was conducted among a group of newly graduated mechanical engineering students. In general, the potential users found the developed gadget very useful for improving teaching–learning activity. © The Editor(s) (if applicable) and The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2023.
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