On cascara STEM education research-based learning activities: Analysing the caffeine, trigonelline substance of cascara fermented by magnetic fields to produce healthy herbal tea

Empowerment of STEM- research based learning is essential to developing student skills in the face of the industrial revolution by integrating science, technology, engineering and mathematic. The aim of the study was to design research-based learning activities with STEM cascara education on analyzing caffeine, trigonelline substance of cascara fermented by magnetic field to produce healthy herbal tea. This research is a qualitative research to produce descriptive data through detailed research procedures. The results of integrating research-based learning models with STEM approaches in solving the problem of using fermented cascara with a magnetic field to produce health herbal teas in this study are in the form of a framework so that the economic value of cascara increases.