Development and Preliminary Validation of the React Learning Packet for Teaching Chemical Reactions

Chemical Reactions present considerable learning challenges for students, particularly in connecting observable changes in matter with particle-level explanations and symbolic representations such as chemical formulas and equations. This study focused on the development and preliminary validation of the REACT Learning Packet for Teaching Chemical Reactions.
A developmental research design was employed in three stages: development, preliminary validation through expert evaluation and refinement, and learner tryout. The packet was developed based on intended learning competencies and principles of the BSCS 5E Instructional Model and organized around five researcher-developed components: Relate, Explore, Act, Collaborate, and Transform. It incorporated contextualized learning activities, guided exercises, collaborative tasks, reflection, formative assessment, and the researcher-developed Find Your Chemistry Card Game. Six experts in Chemistry education and instructional material development evaluated the packet in terms of content accuracy, instructional design, usability and clarity, learning activities and assessment, and alignment with learning objectives.
The packet obtained an overall weighted mean of 4.77, interpreted as Highly Acceptable, while instructional design received the lowest rating (WM = 4.50, Acceptable). Expert feedback was incorporated into the refinement of the packet before learner tryout. The revised packet was implemented with 35 Senior High School STEM learners during two consecutive Chemistry class sessions. The mean score increased from 8.20 (SD = 2.08) to 13.51 (SD = 2.37). The Wilcoxon Signed-Rank Test showed a significant difference between pretest and posttest scores (Z = −4.99, p < .001, r = .84). Thus, the null hypothesis was rejected. The findings provide preliminary evidence supporting further development and evaluation of the REACT Learning Packet for teaching Chemical Reactions.

Action research, Chemistry education, Chemical reactions, Game-based learning

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