The teaching of fundamental concepts in fluid physics presents an educational challenge, as some principles can be abstract and difficult for students to visualize. Especially Pascal’s Principle, which states that any pressure applied to an incompressible fluid at rest is transmitted equally in all directions, requires effective teaching methodologies to facilitate its understanding. To enhance learning, it is essential to use approaches that combine theoretical explanations with practical experimentation, allowing students to observe and analyze its effects directly.

In this context, this study presents a practical methodology for teaching Pascal’s Principle, using mobile devices equipped with pressure sensors and the Phyphox application. The objective is to help students understand that pressure applied at a single point in an incompressible fluid at rest is uniformly transmitted in all directions. To achieve this, an experiment was designed in which a mobile phone is placed inside a hermetically sealed bag filled with water. By applying different external forces to the surface of the bag, the pressure variations are recorded using the mobile device’s sensor.

The results obtained in this experiment show that pressure increases remain consistent, regardless of the point at which force is applied to the bag, thus providing clear experimental validation of Pascal’s Principle. From an educational perspective, this activity serves as a valuable tool for teaching fluid physics, as it promotes active and practical learning. Through this methodology, students not only gain a theoretical understanding of the principle but can also empirically verify its validity through an interactive experiment.

Furthermore, this activity fosters engaging and hands-on learning, integrating accessible technology into the classroom to enrich the educational experience in fluid physics instruction. Additionally, the use of mobile devices and applications such as Phyphox facilitates the integration of technology into educational practices, allowing instructors to enhance experimentation experiences and leverage technological tools for scientific education.

Keywords: Pascal&#039, s Principle, physics education, pressure sensors, hands-on learning, mobile technology, Phyphox.