Teaching Heat Transfer in Physics Through Real Life Contextual Learning With Local Cooking Practices

Technical Summary: Teaching Heat Transfer Through Real-Life Contextual Learning with Local Cooking Practices

Problem Statement
Physics education in sub-Saharan Africa, particularly within Nigerian secondary schools, is characterized by low achievement, declining enrollment, and significant gender disparities. The study identifies the primary cause of these challenges as a disconnect between abstract physics concepts and students' daily lived experiences. Traditional, teacher-centered instructional methods relying on rote memorization fail to foster deep conceptual understanding, leading to widespread avoidance of the subject. Furthermore, existing curricula often lack cultural alignment, failing to leverage indigenous knowledge systems such as local cooking practices, which are ubiquitous in the students' social environments.

Methodology
The study employed a qualitative, design-based research approach to investigate the integration of local Nigerian cooking practices into heat transfer instruction.

• Context & Participants: The research was conducted in two Senior Secondary II classrooms (aged 15–17) in Ilorin, Kwara State, Nigeria, representing both urban and semi-urban settings. The sample included 78 students (38 male, 40 female).
• Theoretical Framework: The instructional design was grounded in Constructivist Learning Theory, Context-Based Learning (CBL), and Culturally Responsive Pedagogy (CRP). These frameworks guided the transformation of the kitchen into a scientific laboratory where prior cultural knowledge served as the foundation for new scientific concepts.
• Instructional Model: The study utilized the 5E Instructional Model (Engage, Explore, Explain, Elaborate, Evaluate) over six 80-minute lessons spanning three weeks.
  • Engage: Activated prior knowledge through questions about local cookware (clay, aluminum, stainless steel).
  • Explore: Students conducted hands-on experiments comparing heat conduction, retention, and cooling rates of different pot materials using water and thermometers.
  • Explain: Facilitated discussions linked observations to formal concepts like thermal conductivity, specific heat capacity, and insulation.
  • Elaborate: Students analyzed energy efficiency, cost, and environmental impacts of different fuels and methods.
  • Evaluate: Assessment included scenario-based quizzes, group presentations, and reflective journals.
• Data Collection & Analysis: Data was gathered through structured classroom observations, teacher reflection journals, informal group discussions, written reflective prompts, and focus group interviews. A thematic analysis methodology was used, involving iterative cycles of open, axial, and selective coding. Member checking with participating teachers was conducted to validate interpretations.

Key Results
The implementation of the kitchen-based instructional model yielded four primary findings:

1. Enhanced Student Engagement: The cultural familiarity of cooking activities created a "safe space" that significantly increased participation. Students who were typically passive became animated, with female students notably assuming leadership roles in group activities.
2. Improved Conceptual Understanding: Pre-assessments showed vague understandings of heat transfer (e.g., "heat just moves"). Post-assessments revealed a shift to precise, deep explanations involving particle-level energy transfer. Visualizing convection with food coloring and experiencing radiant heat from charcoal stoves helped students differentiate between conduction, convection, and radiation. Crucially, students demonstrated an increased ability to transfer these concepts to non-cooking contexts.
3. Cultural Validation and Inclusivity: The approach validated indigenous knowledge systems, treating traditional practices (e.g., the use of clay pots) as legitimate scientific resources. This was particularly impactful for female students and those from rural backgrounds, boosting their confidence and science identity.
4. Implementation Challenges: The study identified practical hurdles, including resource constraints (lack of standardized thermometers), safety management in classroom settings, and the tension between time-consuming hands-on investigations and the pressure to cover the syllabus for standardized exams. Teachers adapted by using creative solutions, such as touch-based temperature assessments and timing comparisons, and by aligning activities directly with curriculum goals.

Key Contributions

• Empirical Evidence in African Contexts: The study provides empirical data on the systematic implementation of kitchen-based science education within Nigerian secondary schools, addressing a gap in literature regarding African educational contexts.
• Curriculum Integration Model: It offers a validated instructional model (the 5E adaptation) for integrating indigenous knowledge and traditional practices into formal physics curricula without compromising academic rigor.
• Gender Equity Insights: The research highlights the potential of domestic, culturally familiar contexts to narrow the gender gap in STEM, specifically by increasing the confidence and leadership of female students in physics.
• Pedagogical Framework: It demonstrates how constructivist and culturally responsive theories can be operationalized to transform non-academic spaces (kitchens) into effective learning environments.

Significance and Claims
The authors claim that this research contributes to science education literature by proving that culturally familiar, gender-inclusive domestic settings can serve as powerful tools for teaching physics. The study asserts that:

• Linking formal scientific principles to everyday life (specifically local cooking) enhances knowledge transfer and conceptual depth.
• Validating students' cultural knowledge addresses both pedagogical challenges and educational equity concerns.
• The approach is viable even in resource-constrained environments, provided that adaptive strategies and teacher support are in place.
• Future policy and curriculum development should prioritize the integration of local cultural contexts and the reform of assessment systems to reflect applied, contextual learning.

The paper maintains a modest stance, acknowledging that while immediate results were positive, longitudinal studies are needed to determine the sustainability of these gains and that further research is required to explore the scalability of this approach across diverse African cultures and other physics topics.