Innovative contextualized instructional materials utilizing ethanolic crude extract from blue porter weed (Stachytarpheta Jamaicensis) for enhancing science learning in the Philippines

Plant extracts are valuable natural resources with diverse applications in pharmaceutical and food industries that can enhance science educa-tion by connecting theoretical knowledge to real-world applications, fostering critical thinking, and promoting environmental awareness. The study aimed to design and evaluate contextualized instructional materials for Grade 7 Science, focusing on integrating Blue Porterweed (Stachytarpheta jamaicensis), a locally abundant medicinal plant, into the curriculum to address the limitations of traditional rote learning methods. The research utilized the ADDIE model, which guided the process through its phases: Analysis, Design, Development, Implementa-tion, and Evaluation. Expert evaluators, science teachers, and Grade 7 students participated in the study to ensure the materials' effectiveness and relevance. Data was collected using the standard Learning Resource Management and Development System (LRMDS) Evaluation Rating Sheet and researcher-developed questionnaires, validated using Lawshe's Content Validity Ratio to ensure validity, and employed the In-ter-class Correlation Coefficient (ICC) to assess reliability. The findings revealed that the developed instructional materials—which included a module, lesson plan, learner activity sheets, and a teacher's guide—met high-quality standards. Additionally, these materials significantly enhanced student engagement and motivation. The study concluded that contextualized instruction positively impacts science education out-comes. The study recommends the broader adoption of such instructional materials in educational settings and suggests further research to explore their long-term effects and potential applications in other subject areas.