TITLE:
Empirical Validation of a Learning Progression in Initial Chemistry Education
AUTHORS:
Maik Walpuski, Kübra Nur Celik
KEYWORDS:
Chemistry, Learning Progression, Validation
JOURNAL NAME:
Creative Education,
Vol.15 No.2,
February
22,
2024
ABSTRACT: Studies have shown that many students do not attain the subject-specific
proficiency required in chemistry classes; therefore, their basic knowledge of
chemistry is lacking. However, this deficit cannot easily be compensated for in
the further years of learning because of the hierarchical structure of chemistry
as a subject. To support cumulative teaching and learning, this study developed
a learning progression for the beginning of chemistry instruction in close
collaboration with school practice. This study focused on core ideas, which are
fundamental chemistry concepts logically linked in a strand map. This study
investigated the dependence of the understanding of one core idea on that of
another to empirically validate possible learning pathways. Subject knowledge
items were developed for each core idea, piloted, and administered to students
in the first 3 years of learning at the lower secondary level in a
quasi-longitudinal study combined with a true longitudinal study. The quality
of the subject knowledge test was satisfactory, as determined using item response
theory models. Many of the hypothesized dependencies were confirmed using the
McNemar test. Simultaneously, students were shown to have low knowledge
relative to curricular specifications.