Annisa Nur Khasanah, Dadan Rosana, Insih Wilujeng, Ayu Gunaningtyas
NEBULA is a web-based electronic learning medium designed to support personal energy-balance awareness by integrating energy intake and expenditure to promote sustainable, healthy lifestyles among university students. This study examined the effectiveness of Design Thinking-STEM (DT-STEM) learning supported by NEBULA in enhancing students’ problem-solving skills. A quasi-experimental pretest-posttest control group design was implemented by comparing an experimental group receiving DT-STEM with NEBULA and a control group receiving conventional STEM learning. Problem-solving skills were assessed using essay-based instruments aligned with established problem-solving indicators. The findings indicate that students in the experimental group demonstrated higher problem-solving performance across multiple aspects, particularly in visualizing problems, describing problems in scientific terms, and executing solution plans. These results suggest that technology-assisted DT-STEM learning through NEBULA effectively fosters problem-solving competence and 21st-century skills, while simultaneously supporting Sustainable Development Goals (SDGs). © School of Engineering, Taylor’s University.
Universitas Negeri Yogyakarta, Yogyakarta, Indonesia; Universitas Sebelas Maret, Surakarta, Indonesia
