Physics in the Public Square: University Extension as a Strategy for Integrating Physics Education and Science Communication

This study demonstrates that a university extension activity involving undergraduate physics students designing and presenting low-cost didactic experiments in a public space effectively bridges the gap between academia and society by enhancing student learning, developing communication skills, and fostering scientific curiosity among the community.

The Gist

Imagine a university not as a fortress of books and locked doors, but as a giant, friendly kitchen where the chefs (the students) are learning to cook. Usually, they practice their recipes in the kitchen, but this paper describes a special day when they took their cooking out to the town square to share a feast with everyone.

Here is the story of "Physics in the Public Square," explained simply:

The Problem: The "Science Wall"

For many people, Physics feels like a secret code written in a language only a few understand. It seems abstract, full of scary math, and disconnected from real life. Meanwhile, Physics is actually everywhere—like the invisible glue holding our world together, from the way a phone screen works to how a boat floats.

The problem is that schools often lack the tools (like fancy labs) to show this magic. So, people think science is boring or too hard.

The Solution: A Pop-Up Science Fair

To break down this wall, a group of future physics teachers at a university in Brazil (UEMASUL) decided to take their class outside. Instead of sitting in a classroom, they set up a "science market" in a public park (Praça da Cultura) in Imperatriz.

The Recipe:

• The Chefs: Students from three different physics classes (Physics I, III, and IV).
• The Ingredients: They didn't use expensive, high-tech lab equipment. Instead, they built their experiments using cheap, everyday items like plastic bottles, wires, mirrors, magnets, and balloons. Think of it as making a gourmet meal out of leftovers.
• The Menu: They created 12 different "stations" showing off mechanics (how things move), electricity, and light.

The Mission: Teaching the Teachers

This wasn't just about showing cool tricks to the public. It was a training ground for the students.

• The Challenge: The students had to explain complex ideas to regular people—kids, grandparents, and neighbors—who knew nothing about physics. They couldn't use jargon; they had to speak "human."
• The Result: By teaching others, the students learned how to connect their textbook knowledge to real life. They learned that being a teacher isn't just about knowing facts; it's about making those facts make sense to someone else.

The Taste Test: What Happened?

The team asked 52 visitors (the "tasters") for their feedback. The results were delicious:

• 97% said the explanations helped them understand the science.
• 81% rated the explanations as "Excellent."
• 100% said they wanted more events like this.
• The "Aha!" Moment: People realized that physics isn't just a school subject; it's part of their daily reality. One person noted, "Physics in practice shows how much our reality is connected to science."

The Big Picture

The paper argues that this approach is a win-win:

1. For the Community: Science becomes less scary and more fun. It turns a "mystery" into something you can touch and play with.
2. For the Students: They become better teachers who can adapt to any situation, using creativity to solve problems with limited resources.
3. For the University: It proves that a university's job isn't just to keep knowledge inside its walls, but to share it with the neighborhood.

In short: The paper describes a successful experiment where future teachers used simple, low-cost tools to turn a public park into a classroom. They proved that when you take science out of the textbook and into the hands of the public, everyone—from the kids to the teachers—learns something new and exciting.

Technical Summary

Technical Summary: "Physics in the Public Square: University Extension as a Strategy for Integrating Physics Education and Science Communication"

Problem Statement
The paper addresses the persistent perception of physics as an abstract, mathematically dense science disconnected from everyday life, a view held by both high school students and the general public. This perception is exacerbated by a scarcity of experimental activities in basic education due to infrastructure limitations and insufficient teacher training. Furthermore, there is a recognized need to move physics education beyond the university walls to foster scientific culture and demonstrate the relevance of physical phenomena in daily life and technology. In the Brazilian context, this challenge is framed by the institutional mandate (Resolution CNE/CES No. 7/2018) requiring undergraduate programs to integrate extension activities (at least 10% of workload) with teaching and research to promote socially engaged professional practice.

Methodology
The study reports on an outreach initiative titled "Physics in the Public Square," implemented on November 22, 2025, at Praça da Cultura in Imperatriz, Maranhão, Brazil. The activity was designed and executed by undergraduate students from the Physics Teacher Education Program at the State University of the Tocantina Region of Maranhão (UEMASUL), specifically those enrolled in Physics I, III, and IV courses.

• Design: Students worked in groups to design and construct 12 didactic experiments using low-cost materials (e.g., PET bottles, wires, mirrors, magnets, cardboard). The experiments covered classical mechanics, electromagnetism, and optics/electromagnetic waves.
• Setting: The event was held in a non-formal public space to engage a heterogeneous audience with no prior connection to the content, intentionally challenging pre-service teachers to adapt their language and manage unpredictable interactions.
• Data Collection: A structured questionnaire was administered to 52 voluntary visitors. The instrument included six closed-ended questions (assessing familiarity, understanding, clarity, interest, and desire for future events) and two open-ended questions (inquiring about learning outcomes and suggestions).
• Analysis: Quantitative data were analyzed descriptively, while qualitative data from open-ended responses were organized into emergent thematic categories.

Key Contributions
The paper contributes to the fields of physics education and science communication by:

1. Demonstrating a Model for Extension: It presents a concrete model for the "curricularization of extension," showing how undergraduate programs can integrate theory, practice, and social responsibility through public engagement.
2. Validating Low-Cost Didactics: It reinforces the efficacy of using low-cost materials to demonstrate complex concepts, fostering creativity and autonomy among pre-service teachers.
3. Bridging Theory and Practice: It illustrates how non-formal educational spaces serve as environments for the dialogical construction of knowledge, where pre-service teachers act as mediators, translating scientific language for lay audiences.
4. Interdisciplinary Integration: The initiative successfully merged content from three distinct physics courses (I, III, and IV), challenging traditional disciplinary fragmentation and promoting a holistic understanding of the field.

Results
Data from the 52 participants indicated high levels of engagement and learning:

• Understanding: 96.9% of respondents stated the explanations helped them understand the phenomena (with 3.1% finding it only partial); 81.3% rated the clarity of explanations as "Excellent."
• Interest: 96.9% found the hands-on experience "Very interesting," and 100% expressed a desire for more events of this nature.
• Familiarity: While 78.1% were familiar with at least one experiment, the open-ended responses revealed that participants learned specific concepts (e.g., Archimedes' principle, Newton's laws), recognized the connection between physics and daily reality, and appreciated the experimental nature of scientific knowledge.
• Student Development: The activity provided pre-service teachers with formative experiences in communication, language adaptation, and collaborative work, essential for teaching in resource-constrained contexts.

Significance and Claims
The authors claim that the "Physics in the Public Square" initiative was an effective strategy for integrating physics education with science communication in a non-formal setting. The paper posits that such activities:

• Democratize Access: They bring scientific knowledge closer to the community, demystifying physics and highlighting its role in society.
• Enhance Teacher Training: They develop critical socio-educational competencies in pre-service teachers, including the ability to dialogue, adapt language, and engage diverse audiences.
• Strengthen the University's Social Role: They fulfill the institutional mandate of extension by returning university-generated knowledge to society.

The paper concludes that while the initiative was successful, future iterations should incorporate digital tools and participatory methodologies to address the needs of diverse audiences, including individuals with disabilities, as suggested by the participants. The authors present this experience as a reference for other programs seeking to implement extension curricularization in innovative and socially committed ways.