Development of Virtual Laboratory in Acid-Base Titration for Grade 11 Learners

Abstract

The increasing use of virtual laboratories in educational institutions necessitates developing a new laboratory activity that would substantially assist teachers in the classroom without web programming obstacles. Hence, the primary aspiration of this study is to create a virtual laboratory in acid-base titration for Grade 11 Learners as an alternative instructional material for conducting experimentation in Chemistry, specifically acid-base titration. The study employed a quantitative research design that involved a research and development approach (R&D) utilizing the ADDIE (Analysis, Design, Develop, Implement, and Evaluate) method. Development of the virtual laboratory was started by crafting a worksheet to guide the creation of the platform. Considering experts’ comments and suggestions, the final revision of the developed worksheet was prepared and ready for making a virtual laboratory. The adviser scrutinized the virtual laboratory platform to check for any errors for further revisions. Through comments/suggestions, virtual simulation was then worked out and validated by the three (3) experts in the field of chemistry education, with rubrics having three (3) categories: pedagogy, content, and ICT. Incorporating comments and suggestions, a final version was crafted with an overall rating of 0.85 in the validity index, which indicates a good and valid tool. To identify errors and discrepancies in the Worksheet and Virtual Laboratory, pilot testing was employed through Grade 11 STEM students. Garnering a 0.91 reliability coefficient using Cronbach’s alpha indicates an excellent instructional material in terms of its internal consistency. The developed student worksheet and virtual laboratory are recommended after going through these processes. They are ready to be used as teaching and learning material for long-distance and face-to-face learning experiments.