Project-based litera-ecopreneur teaching materials for Indonesian language learning in elementary schools: A development study

Indonesian language learning is one of the subjects encouraged to be delivered through a project-based approach. However, many teachers still rely on textual methods, which pose challenges for students with auditory and kinesthetic learning styles, while students with visual preferences tend to benefit more. To address this issue, this study developed interdisciplinary teaching materials that integrate literacy, ecology, and entrepreneurship—referred to as litera-ecopreneur—within a project-based framework to accommodate diverse learning styles. The development process followed the Borg and Gall model, comprising research and information gathering, planning, preliminary product development, initial field testing, and main product revision. The resulting teaching material, titled Indonesian Language for Grade IV Elementary School, includes six thematic units. Expert evaluations in content, presentation, language, and visual design rated the product at 93% in overall quality. In addition, student assessments yielded an average score of 86.5%. Beyond academic content, the materials were designed to cultivate environmental awareness and social ethics, while supporting students' varied learning preferences.