Banca de DEFESA: JOAO ANTONIO DAS GRACAS BRITO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : JOAO ANTONIO DAS GRACAS BRITO
DATE: 13/07/2026
TIME: 14:00
LOCAL: Laboratório Didático de Física
TITLE:

THE USE OF EDUCATIONAL ROBOTICS AND MOBILE DEVICES: AN INTEGRATION FOR TEACHING THE DOPPLER EFFECT

KEY WORDS:

Arduino; Doppler; frequency.

PAGES: 136
BIG AREA: Ciências Exatas e da Terra
AREA: Física
SUMMARY:

The proposal presented in this work emerged from a reflection that is currently very clear in Physics teaching: How can the understanding of a phenomenon that is part of the student’s social daily life be facilitated in a concrete and meaningful way, yet remains restricted to concepts in textbooks. The proposal aims to bring students closer to understanding the Doppler effect through a practical and demonstrative experiment developed with 2nd and 3rd year high school students at Colégio Tiradentes da Polícia Militar III (CTPMIII), in Ariquemes (RO), which originates from one of the most important phenomena of Wave Physics: the change in the frequency of a wave that is perceived when there is relative motion between the sound source and the observer. Even though the Doppler effect is used in various fields of science and technology, when it comes to high school education, this topic is generally approached theoretically, generating difficulty in understanding the process through which the phenomenon occurs. However, when related to concrete situations, it gains greater importance, making it easier for students to understand. Taking this into consideration, an experiment was developed using a robotic car prototype equipped with an Arduino MEGA 2560 and a sound sensor (active buzzer) programmed to emit a sound frequency while traveling a certain distance. At the other end of the displacement, a smartphone was positioned on a fixed base with the FizziQ application installed, which would be used as the “observer” and would capture and analyze, through graphs, the frequency variation according to the distance from the sound source. This practice allowed students to be encouraged to compare the experimental data with the theoretically predicted results. At the conclusion of the proposal, discussions were held about the Doppler effect and its applications, broadening students’ understanding of the role of Physics in transforming society. The results indicated that there was an improvement in the conceptual understanding of the topic, in addition to contributing to the strengthening of analytical reasoning and data interpretation. By transforming the Doppler effect into an interactive and concrete experiment, the proposal showed that students can take ownership of more complex physical concepts in a more meaningful way, fostering protagonism and a closer relationship with science.

COMMITTEE MEMBERS:
Presidente - 2032857 - ELIE ALBERT MOUJAESS
Interna - 1849744 - DIEIME CUSTODIA DA SILVA
Interna - 2146167 - ANAILDE FERREIRA DA SILVA
Externo ao Programa - 1475630 - JUDES GONCALVES DOS SANTOS - UNIRExterno à Instituição - HUALAN PATRICIO PACHECO - IFRO