DEVELOPMENT AND APPLICATION OF A TWO-TIER DIAGNOSTIC TEST TO ASSESS SECONDARY STUDENTS’ UNDERSTANDING OF CHEMICAL EQUILIBRIUM CONCEPTS

TitleDEVELOPMENT AND APPLICATION OF A TWO-TIER DIAGNOSTIC TEST TO ASSESS SECONDARY STUDENTS’ UNDERSTANDING OF CHEMICAL EQUILIBRIUM CONCEPTS
Publication TypeJournal Article
Year of Publication2011
AuthorsAkkus, H, Kadayifci, H, Atasoy, B
JournalJournal of Baltic Science Education
Volume10
Issue3
Start Page146-155
Date PublishedSeptember/2011
Type of ArticleOriginal article
ISSN1648-3898
Other NumbersICID: 963603
KeywordsAlternative Conception, chemical equilibrium, high school, two-tier multiple choice test
Abstract

The purpose of this study is to develop a two-tier multiple choice test to detect tenth grade high school students’ conceptual understanding related to chemical equilibrium. In the development of the test the steps described by Treagust (1988) were used. The test was prepared for the purpose of detecting students’ conceptual understanding in topics like approach to equilibrium, equilibrium state, changes in the equilibrium conditions, addition of inert gas and catalyst. The test was administered to 102 tenth grade students. The internal validity coefficient of Cronbach alpha was 0.903. Difficulty indices ranged from 0.20 to 0.93, and discrimination indices ranged from 0.19 to 0.89. Each item was analyzed to determine student understanding and identify alternative conceptions about, chemical equilibrium concept. Results of the test suggested students did not acquire a satisfactory understanding of chemical equilibrium concepts and 25 common students’ alternative conceptions were identified through analysis of test items.

URLhttp://journals.indexcopernicus.com/abstracted.php?level=5&icid=963603
Refereed DesignationRefereed