In this pilot study, we describe the adoption of Peer Instruction (PI) in an undergraduate Data Science classroom, at the School of Computing at a large University in southern India. During PI, students actively participate in their learning through small group peer discussions in real time while they answer conceptual questions posed by the instructor. This research work is one of the results of a week-long hands-on workshop conducted by American engineering educators introducing Peer Instruction (PI), an active teaching-learning pedagogy, to the academic context in India. In this international collaborative work, we studied the effectiveness of PI as a pedagogy for teaching the Fundamentals of Data Science in an in-person undergraduate Data Science and Business Systems classroom in a large University in southern India. Several studies on PI in engineering courses exist, but very few studies focus on PI in the topic of Data Science Business Systems in general and/or Fundamentals of Data Science in particular. The main research question in this pilot study focuses on comparing correctness gains for students learning Fundamentals of Data Science through Peer instruction and lecture-based instruction. Traditional lecture-based teaching was conducted in the academic year 2023-2024. PI-based teaching was conducted in the academic year 2024-2025. Ten PI questions were developed for Fundamentals of Data Science. Pre and post-course surveys were conducted through Google Forms. This paper analyses 48 students' responses to determine if PI has helped students learn and recognize the fundamentals of data science more effectively than lectures. The results show significant correctness gains for students with PI over lectures. Average answer correctness for students improved from 2.38 to 9.29 out of a possible maximum of 10. Statistical significance of student scores were compared using ANOVA tests. We found a statistically significant correlation between using PI and improved student scores, than through traditional lectures. PI as an approach seemed to have helped students obtain clarity in their understanding, and seemed to have leveraged the social aspect of learning, as students often seemed to find explanations from peers more relatable and easier to understand than those from instructors.
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