Development of a Science Experiment Book for Grade 5 Learners: A Project-Based Approach

ABSTRACT
This study aimed to develop and validate a Science Experiment Book for Grade 5 learners using a project-based approach to enhance learners’ science process skills, engagement, and conceptual understanding. The study was anchored on Constructivism, Experiential Learning Theory, and Project-Based Learning Theory (Vygotsky, 1978; Bruner, 1961; Thomas, 2000), which emphasize active learning, hands-on experiences, and real-world application of knowledge. A developmental research design was utilized, involving Grade 5 learners and science teachers from a selected elementary school as respondents and validators of the instructional material.
The findings revealed that learners demonstrated a generally high level of science process skills, with an overall weighted mean of 4.07 (81.4%), interpreted as moderately acceptable. Learners showed strong performance in measurement accuracy, performing multiple trials, and suggesting improvements in experiments. However, areas such as following procedures, organizing data, distinguishing observation from inference, and using scientific vocabulary were identified as areas needing improvement.
In response to these findings, a Science Experiment Book was developed incorporating step-by-step guided procedures, structured data recording tools, vocabulary enrichment sections, reflective tasks, and project-based activities aligned with the Grade 5 science curriculum. The material underwent expert validation and obtained an overall rating of 4.07 (81.4%), indicating that it is moderately acceptable in terms of content accuracy, clarity, organization, and usefulness. The results indicate that the developed material effectively supports learner engagement, critical thinking, and scientific inquiry skills, providing meaningful, hands-on learning experiences that promote deeper understanding of scientific concepts.
In conclusion, the project-based Science Experiment Book is a relevant and effective instructional material for Grade 5 learners. It is recommended for use as a supplementary resource in science instruction and for continuous refinement to further enhance learners’ scientific skills and overall learning outcomes.
Keywords: Science Experiment Book, Grade 5 Learners, Science Process Skills, Project-Based Learning, Instructional Material Development

SCIENCE

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