A Rasch Model-Based Study on the Transition of Chemistry Instruction between Junior and Senior High Schools: A Case Study of Redox Reactions
Xingyuan Gao
Li Li （ School of Chemistry and Materials Science, Guangdong Second Normal University, Guangzhou, Guangdong 510303 ）
Wolin Chen （ School of Chemistry and Materials Science, Guangdong Second Normal University, Guangzhou, Guangdong 510303 ）
Xiaofeng Chen （ School of Chemistry and Materials Science, Guangdong Second Normal University, Guangzhou, Guangdong 510303 ）
Xinyi Liang （ School of Chemistry and Materials Science, Guangdong Second Normal University, Guangzhou, Guangdong 510303 ）
Tairong Huang （ Jiangmen No.1 Middle School, Jiangmen, Guangdong 529080 ）
Abstract
In the context of the new curriculum reform, a notable discontinuity exists in chemistry instruction
between junior and senior high schools. In frontline teaching, Grade 10 students generally struggle with
the conceptual progression of redox reactions, and existing research lacks multi-dimensional analysis and
assessment to guide instruction. Based on the Rasch model, this study constructed a three-dimensional
transition system encompassing knowledge, ability, and competency, and developed an assessment instrument.
The instrument demonstrated an item reliability of 0.87, good fit, and acceptable reliability and validity. A
controlled teaching experiment was conducted with Grade 10 classes of similar academic backgrounds. Data
showed that the experimental class achieved significantly higher transition levels, with a statistically significant
difference from the control class. These findings indicate that the Rasch model-based three-dimensional
transition system is scientific and feasible, and that transition-focused instruction can bridge the discontinuity
between educational stages and enhance students' comprehensive chemistry competency
Keywords
Rasch model; junior–senior high school transition; educational measurement; redox reactionsFull Text
PDFReferences
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Copyright © 2026 Xingyuan Gao, Li Li, Wolin Chen, Xiaofeng Chen, Xinyi Liang, Tairong Huang
Publishing time:2026-07-09
This work is licensed under a Creative Commons Attribution 4.0 International License