Cultural literacy, as originally operationalized by Hirsch et al., ¹³ denotes the body of shared background knowledge prerequisite to effective communication and meaningful cultural participation. Contemporary scholarship has substantially challenged and enriched this static conception. Rapanta et al. ¹⁴ reconceptualize cultural literacy as a dialogic construction forged through empathetic conversation rather than passive content acquisition. Lahdesmaki et al. ¹⁵ further theorize it as a creativity-mediated socio-cultural practice encompassing cognitive competence and emotional intelligence alike. Within 21st-century skills frameworks, cultural literacy has migrated from a supplementary to a foundational cross-curricular competency. ¹⁶ Mashami et al. ¹⁷ demonstrate that when cultural knowledge is systematically integrated into disciplinary instruction, students exhibit significant improvements in both conceptual understanding and scientific literacy, underscoring its transversal epistemic value.

The Malay cultural tradition constitutes one of Southeast Asia’s richest repositories of indigenous knowledge systems, encompassing complex values, practices, and aesthetic sensibilities transmitted across generations. ¹⁸ The animating principles of Malay cultural identity customary law, moral virtue, deliberative consensus, and communal cooperation collectively encode a sophisticated ethical and social epistemology rooted in community, harmony, and ecological sustainability. ¹⁹ In Riau Malay specifically, local wisdom manifests across multiple domains: oral literary traditions (pantun, gurindam, syair), adat governance structures, traditional performing arts, and craft-based knowledge systems.

Sutrisno et al. ²⁰ emphasize that such knowledge systems represent valid epistemological frameworks that bridge students’ lived cultural experiences and abstract academic content. Wahyudiati and Qurniati ²¹ demonstrate that ethnopedagogical approaches mapping traditional cultural practices onto academic concepts produce measurable improvements in learning outcomes while simultaneously affirming cultural identity. These findings indicate that Malay local wisdom integration serves a dual pedagogical function: enhancing academic achievement and strengthening cultural ownership. ^{22, 23}

Mayer’s ⁶ Cognitive Theory of Multimedia Learning (CTML) provides the foundational instructional design rationale: coordinated verbal and pictorial information distributed across auditory and visual channels reduces extraneous cognitive load and frees working memory for germane processing. Clark and Mayer ⁷ further demonstrate that well-designed e-learning produces stable, superior learning outcomes compared to text-only instruction across diverse implementation contexts. Saini and Baba ⁸ confirm significant metamemory and engagement advantages for multimedia blended environments, while Subali et al. ²⁴ document robust scientific literacy gains from culturally responsive Android-based learning applications.

A growing body of empirical research supports the effectiveness of technology-enhanced local wisdom learning. Fadli and Irwanto ²⁵ demonstrate that local wisdom-integrated instructional models significantly improve pre-service teachers’ problem-solving competencies. Ramdani et al. ²⁶ document that culturally responsive materials reduce gender-based achievement disparities in science education. Amanda et al. ²⁷ and Wahyu ²⁸ further establish that technology-mediated cultural integration yields robust academic outcomes. Yet experimental evidence specifically targeting the simultaneous development of cognitive cultural literacy and affective identity formation through validated multimedia ETMs remains limited, particularly for Malay cultural contexts.

This study’s theoretical architecture integrates three complementary frameworks. Vygotsky’s ¹² socio-cultural constructivism provides the primary epistemological foundation: knowledge construction is fundamentally a social process mediated through culturally contextualized tools and interactions. The Zone of Proximal Development positions culturally grounded ETMs as scaffolding mechanisms bridging existing cultural knowledge and new academic content. ²⁹ Mayer’s ⁶ CTML provides the instructional design rationale: dual-channel, low-redundancy multimodal instruction is predicted to outperform text-only presentation for complex cultural content. Hall’s ¹⁰ and Tajfel and Turner’s ¹¹ cultural identity theories provide the affective-motivational framework: identity affirmation in instructional materials strengthens academic engagement and persistence. ³⁰ Bandura’s ³¹ Social Cognitive Theory further specifies how culturally representative content reinforces academic self-efficacy through familiar models and contextual anchors.

This study employs a two-phase mixed-methods Research and Development (R&D) framework: (1) systematic development and expert validation of the ETM-Malay Culture product; and (2) quasi-experimental effectiveness testing using a nonequivalent pretest-posttest control group design. ^{32, 33} This sequential architecture aligns with the educational design research paradigm emphasizing both design rigor and evidence-based outcome evaluation. ^{34, 35}

The ETM-Malay Culture was developed through the five iterative stages of the ADDIE model ³⁶ : Analysis, Design, Development, Implementation, and Evaluation. The Analysis phase employed a three-layer needs assessment: (a) learner needs analysis examining students’ digital literacy proficiency, prior cultural knowledge, and learning preferences (n = 30); (b) curriculum alignment analysis mapping BMR competency standards to national frameworks and the 28 Malay identity values mandated by Gubernatorial Decree No. 7429/X/2023; and (c) contextual analysis of culturally significant local wisdom themes through document analysis and structured teacher interviews.

The Design phase produced an instructional blueprint organized around five Malay cultural domains: (1) customs and traditions; (2) language and literature; (3) performing arts; (4) traditional games; and (5) material culture. Learning objectives were structured across Bloom’s revised taxonomy domains, ³⁷ with multimodal strategies designed to activate auditory, visual, and kinesthetic learning modalities consistent with Universal Design for Learning principles. ³⁸

The Development phase produced a mobile-and-desktop-responsive digital module comprising: (a) user navigation guides; (b) contextual cultural introductions; (c) core instructional content delivered via text, infographics, embedded animations, narrative audio, and authentic video documentation of cultural practices including syair and gurindam recitations, traditional game demonstrations, and Malay costume tutorials; (d) reflective summaries; and (e) formative evaluation activities with automated feedback. Interface design followed Cognitive Load Theory principles ³⁹ to minimize extraneous processing demands.

Product validity was established through a five-validator panel comprising two Riau Malay cultural studies content experts, two educational technology specialists, and one instructional design expert. Validators assessed four components using a four-point Likert rubric (1 = invalid to 4 = highly valid). Two complementary formulas were employed: inter-rater agreement was quantified using the Gregory coefficient ⁴⁰ (V ≥ 0.81 = very high), while item-level validity was assessed using Aiken’s Validity Index ⁴¹ (minimum threshold V ≥ 0.60). This dual-formula approach strengthens methodological objectivity. ⁴²

2.4.1 Participants and sampling

N = 293 Grade 7–8 junior secondary students across six schools in three Riau Province districts participated: Urban City (n = 96), Suburban Regency (n = 100), and Rural Regency (n = 97). One experimental and one control class were assigned per district. A priori statistical power analysis (G*Power 3.1 ⁴³ ) confirmed sample adequacy for detecting medium effects (d = 0.50) at power = 0.80, α = .05. Purposive sampling selected classes with comparable baseline academic profiles, confirmed through pre-test equivalence testing.

2.4.2 Intervention

The intervention comprised 12 instructional sessions over six weeks. The experimental group engaged with ETM-Malay Culture through guided digital learning activities, multimedia exploration, collaborative cultural reflection tasks, and interactive formative assessments. The control group received equivalent instructional time using conventional approaches: teacher-led lectures, standard textbook activities, and static printed materials without digital media integration or structured local wisdom scaffolding. Implementation fidelity was monitored via structured observation checklists completed each session by trained research assistants.

2.4.3 Instruments

Local Wisdom Literacy was assessed using a researcher-developed 36-item multiple-choice test (after dropping 4 invalid items from 40) measuring cognitive understanding, affective appreciation, and behavioral engagement with Malay cultural content. Cultural Identity Formation was evaluated through structured classroom observation using a validated 11-indicator rubric targeting observable Malay values derived from Gubernatorial Decree No. 7429/X/2023 (Cronbach’s α = .891), employing a four-category scale (Poor, Sufficient, Good, Very Good). Item validity was confirmed via Pearson Product Moment correlation (r > r-table = 0.361, α = .05) on a pilot sample (n = 30).

2.4.4 Data analysis

Quantitative data were analyzed using IBM SPSS v.26. Normality was verified via Shapiro-Wilk tests (all p > .05) and homogeneity of variance via Levene’s test (all p > .05). Pre-test equivalence was confirmed via independent-samples t-tests. The primary effectiveness analysis employed two-way between-subjects ANOVA with Group (experimental vs. control) and District (Urban, Suburban, Rural) as factors, enabling examination of both main effects and the Group × District interaction. Effect sizes were computed as partial eta-squared (η ²p) and Cohen’s d. ⁴⁴

3.1.1 Product validity (Gregory Formula and Aiken’s V)

All four ETM-Malay Culture components achieved Gregory coefficients exceeding the 0.81 threshold, with an overall mean of V = 0.91 (very high validity). Content accuracy and cultural authenticity recorded the highest coefficient (V = 0.93), reflecting strong inter-rater consensus on material fidelity to authentic Riau Malay heritage. Aiken’s V analysis across 14 assessment aspects yielded values ranging from 0.86 to 0.95 (V̅ = 0.91; very valid). Full results are presented in Tables I and II.

3.1.2 Instrument reliability

Both instruments demonstrated high internal consistency (LWL: α = .874; CIF rubric: α = .891), within the optimal range (0.80–0.90) that confirms reliability while avoiding item redundancy. ⁴⁵ The final instruments comprised 36 LWL test items and 11 observable CIF indicators. Full item validity and reliability statistics are presented in Table III.

Independent-samples t-tests confirmed no statistically significant pre-test differences between experimental and control groups across all three districts (all p > .05), establishing baseline group equivalence as a prerequisite for valid causal inference. Levene’s tests confirmed homogeneity of variance in all pre-test and post-test district comparisons (all p > .05), satisfying ANOVA assumptions. See Table Iv.

The two-way ANOVA revealed a large, statistically significant main effect of instructional Group on post-test LWL scores ( Table VI). Descriptive statistics for pre-test, post-test, and gain scores by group and district are summarized in Table V. The partial eta-squared of η ²p = 0.50 substantially exceeds the conventional large-effect threshold (η ²p = 0.14), ⁴⁴ classifying this as an exceptionally strong treatment effect. The main effect of District was non-significant, and, critically, the Group × District interaction was likewise non-significant (p = .368). This confirms that ETM-Malay Culture effectiveness was consistent across all three geographically distinct districts, irrespective of their differences in local cultural context, institutional resources, and student demographics.

Structured classroom observations across 12 sessions documented the differential development of 11 Malay cultural identity value indicators. The experimental group achieved ‘Very Good’ on all 11 indicators by the final observation sessions, while the control group reached a maximum of ‘Good’ on most indicators and ‘Sufficient’ on four: Collective Solidarity, Diligence & Perseverance, Self-Confidence & Autonomy, and Honesty. The control group did not achieve ‘Very Good’ on any indicator. Table VII presents the full comparative observation results.

The large and statistically significant treatment effect [F(1, 287) = 287.43, p < .001, η ²p = 0.50; d = 1.19–1.27] aligns with and substantially extends the Scopus-indexed literature on multimedia-enhanced cultural and local wisdom education. Mayer’s ⁶ CTML provides the primary explanatory mechanism: the video documentation of syair and gurindam recitations, traditional game sequences, and Malay costume demonstrations embedded in ETM-Malay Culture operationalizes dual-channel, low-redundancy principles that CTML predicts will optimize germane processing of culturally complex content.

The η ²p of 0.50 substantially exceeds benchmarks reported for multimodal digital heritage applications (η ² ≈ 0.18–0.29) documented in comparable Scopus-indexed studies. This elevated effect likely reflects three synergistic factors: (1) the more intensive 12-session implementation protocol; (2) the high cultural specificity and contextual relevance of Riau Malay content for local learner populations, activating Vygotsky’s ¹² ZPD scaffolding; and (3) the distraction-free, dedicated multimedia hosting environment addressing key implementation barriers identified in the digital learning literature. ² The non-significant Group × District interaction corroborates Clark and Mayer’s ⁷ prediction that well-designed e-learning produces stable outcomes across contexts—a finding with direct implications for scalable policy implementation across Riau Province’s 12 districts and analogous Indonesian provinces.

The observational finding that all 11 identity value indicators reached ‘Very Good’ in the experimental group, while the control group did not reach this threshold on any indicator, provides strong support for the proposition that digital multimedia instruction is a more effective medium for cultural value internalization than conventional text-based pedagogy. Four theoretically grounded mechanisms account for this differential.

First, the multimedia scaffolding mechanism: ³¹ ETM-Malay Culture video and audio content modeled authentic Malay cultural behaviors, providing the observational models that Social Cognitive Theory identifies as prerequisites for behavioral acquisition. Second, the embodied engagement mechanism: ⁴⁶ performance-based tasks created conditions for participatory cultural practice, wherein identity values are enacted rather than memorized. The value of alah-menang (gracious yielding), in particular, cannot be effectively transmitted through factual description; it requires culturally embedded, conflict-navigating group work. Third, the motivational mechanism: ⁶ culturally relevant and aesthetically engaging digital content activates interest-based motivation sustaining cognitive engagement across sessions. Fourth, the identity affirmation mechanism: ^{10, 11} explicit embedding of identity-value annotations in each content unit creates structured opportunities for reflexive cultural positioning.

The limited identity value development in the control group is consistent with Freire’s ⁴⁷ critique of banking education: passive knowledge reception fails to create the conditions for authentic value internalization. This aligns with Rapanta et al., ¹⁴ who demonstrate that dialogic pedagogical approaches consistently outperform transmission-oriented instruction in developing cultural awareness and affective identity outcomes. The five indicators exhibiting the most pronounced gap collective solidarity, diligence, self-confidence, honesty, and gracious yielding are precisely those requiring embodied, performative, and peer-collaborative cultural engagement that ETM-Malay Culture’s multimedia architecture uniquely facilitates.

These findings carry direct implications for three stakeholder domains. For curriculum policy, the validated ADDIE-based development framework offers a replicable, scalable model for digitizing local wisdom curricula while preserving cultural authenticity, directly supporting Indonesia’s Merdeka Belajar digitalization agenda. ⁴⁸ The framework is theoretically transferable to the digitalization of local wisdom curricula across Indonesia’s 34 provinces and analogous multilingual, multicultural educational contexts in Southeast Asia and beyond.

For instructional design, the multi-method expert validation protocol (Gregory Formula + Aiken’s V) establishes a methodologically rigorous standard for culturally responsive material development, offering a defensible alternative to single-indicator validity approaches in contexts where expert judgment constitutes the primary source of validity evidence. ^{40, 41, 42} For digital ethnopedagogy theory, these findings advance understanding of how technology-mediated instruction can function as a cultural revitalization instrument rather than an agent of cultural displacement a contribution directly relevant to Social Sciences & Humanities scholarship on technology-mediated heritage transmission in postcolonial societies. ^{15, 49}

Several limitations merit explicit acknowledgment. First, purposive sampling of intact classes constrains random assignment, introducing potential selection effects that pre-test equivalence testing mitigates but cannot eliminate. Second, the 12-session observation period captures short-term identity value development and cannot confirm longitudinal internalization or behavioral stability beyond the instructional context. Third, the single-teacher-per-class design conflates teacher quality with group condition; future research should address this through multi-teacher or teacher-rotation designs. Fourth, observational assessments remain subject to observer-expectancy effects despite established inter-rater reliability.

Future research should employ longitudinal follow-up assessments to examine the durability of ETM-Malay Culture effects and investigate digital self-efficacy, prior cultural exposure, and motivational orientation as potential moderators of treatment responsiveness. Studies exploring augmented reality (AR) and gamification enhancements within the ADDIE framework, and testing cross-ethnic applicability within Indonesia’s diverse regional contexts, would substantially advance the digital ethnopedagogy literature.