2025 ASEE Annual Conference & Exposition

In this study, we present an innovative approach to STEM education for K-12 and first-year college students using readily accessible materials to demonstrate fundamental principles of pressure sensors and capacitance. Our educational module employs gummy candies and marshmallows as dielectrics to create simple pressure sensors, facilitating experiential learning that bridges abstract scientific theories and practical applications. We measured the capacitance changes by applying pressure with a 200g weight or a finger press on three types of gummies and marshmallows, revealing a correlation between the softness of the materials and the percentage increase in capacitance. By grounding complex concepts in tangible experiments, the module aligns with constructivist learning theory, enabling students to directly observe the relationship between physical deformation and electrical property changes. This hands-on approach enhances students' understanding and interest in STEM fields, providing a promising model for engaging and cost-effective education. Furthermore, our approach underscores the potential of using everyday materials for effective STEM education, promoting critical thinking and problem-solving skills.