Assessing the Effectiveness of Inquiry-Based Learning on Conceptual Understanding of Genetics Among High School Biology Students (If you prefer more options, I can provide a list.)

Project Abstract

This study investigates the effectiveness of inquiry-based learning (IBL) on enhancing conceptual understanding of genetics among high school biology students, comparing it with traditional teacher-centered instruction. A quasi-experimental design was employed in four public secondary schools within a metropolitan district, involving 280 students across eight biology classes. Classes were randomly assigned to either an IBL treatment group or a conventional instruction control group, with pre-tests administered to establish baseline genetics conceptions. The intervention spanned eight weeks, integrating student-driven investigations, guiding questions, experimental simulations, model-building activities, and collaborative data analysis, aligned with a framework that emphasizes constructing scientifically accurate mental models of Mendelian inheritance, gene expression, and molecular mechanisms. Quantitative data were collected through validated genetics concept inventories, unit exams, and task-based assessments that required explanation of phenotypic and genotypic outcomes, Punnett square interpretations, and predictions of inheritance patterns under various genetic scenarios. Qualitative data were gathered from student reflective journals, think-aloud protocols during problem-solving tasks, classroom observation rubrics, and teacher field notes to capture epistemic engagement, inquiry behavior, and collaboration dynamics. Reliability analyses indicated acceptable internal consistency and inter-rater reliability for scoring rubrics, while validity was supported through expert reviews and pilot testing. Analyses compared post-test scores between groups using ANCOVA, controlling for pre-test scores, with effect sizes interpreted according to Cohen’s d. The IBL group demonstrated statistically significant higher achievement in conceptual understanding of genetics than the control group (p < .01), with a large effect size (d ? 0.80). Subscale analyses revealed greater gains in understanding of independent assortment, Punnett square reasoning, and molecular-to-phenotypic connections, suggesting that IBL more effectively facilitates integration of conceptual knowledge with mechanistic explanations. Longitudinal follow-up assessments at six weeks post-intervention indicated sustained improvements in transfer tasks requiring application of genetics concepts to novel problems, although attenuation was observed in some higher-order reasoning items, informing potential needs for reinforcement. Qualitative results corroborated the quantitative findings students in the IBL condition exhibited higher levels of epistemic curiosity, collaborative sense-making, and metacognitive regulation, while teachers reported increased student agency, improved questioning quality, and more diagnostic formative assessment opportunities. The study also identified challenges such as time constraints, the need for professional development in facilitating inquiry, and alignment of inquiry activities with standardized curricula and assessment practices. Implications for practice include designing scalable IBL units that balance student autonomy with structured guidance, incorporating ongoing formative assessments to monitor misconceptions, and supporting teachers with resource- and time-aware planning. The findings contribute to the evidence base supporting inquiry-based pedagogy as an effective pathway for deepening genetic literacy and scientific reasoning among secondary students, while outlining actionable recommendations for classroom implementation, policy alignment, and future research directions.

Project Overview

What This Project Is About

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A straightforward study that tests whether learning by asking questions and exploring concepts (inquiry-based learning) helps high school students better understand genetics, compared to traditional teaching methods. It focuses on ideas like how traits are inherited, DNA basics, and how traits show up in organisms.

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The Problem It Addresses

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Many students struggle with genetics concepts because they memorize terms without connecting them to real-world ideas. This project investigates whether a hands-on, question-led approach makes these ideas clearer and more lasting, which could improve overall science literacy.

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Objectives of the Project

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1. Evaluate changes in students' understanding of key genetics concepts after an inquiry-based module.
2. Compare inquiry-based and traditional teaching methods in terms of student engagement.
3. Identify which genetics topics benefit most from inquiry-based activities.
4. Assess students’ ability to explain genetic concepts in their own words.

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What You Will Do Step by Step

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1. Review literature on inquiry-based learning and genetics education.
2. Design an inquiry-based learning unit focused on genetics topics.
3. Recruit a classroom or two and obtain necessary approvals.
4. Administer pre-tests to assess baseline understanding.
5. Deliver the inquiry-based unit and a traditional unit to different groups.
6. Collect data through tests, surveys, and student reflections.
7. Analyze data to compare gains and attitudes between groups.
8. Interpret results and discuss practical implications for teaching.

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Expected Outcome

Anticipated findings include greater gains in genetics understanding for the inquiry-based group, higher interest in science, and practical recommendations for teachers on implementing inquiry approaches in genetics lessons.