ASSESSING THE STUDENTS’ UNDERSTANDING RELATED TO MOLECULAR GEOMETRY USING A TWO-TIER DIAGNOSTIC TEST
ASSESSING THE STUDENTS’ UNDERSTANDING RELATED TO MOLECULAR GEOMETRY USING A TWO-TIER DIAGNOSTIC TEST
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使用两级诊断测试评估学生对分子几何相关的理解
DOI：
10.33225/jbse/14.13.839
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发表时间：
2014
影响因子：
1.2
通讯作者：
Senol Alpat
中科院分区：
文献类型：
--
作者：
Melis Arzu Uyulgan;Nalan Akkuzu;Senol Alpat
在这项研究中，大学生对分子几何学科的理解水平和误解是通过研究人员开发的由 25 个项目组成的两层诊断测试来确定的。它被应用于 110 名大学生。对测试进行信度、效度检验和试题分析，检测试题的难度和判别指数。测试的信度系数为0.856，而测试的平均难度值为0.487。根据包含开放式问题的第二层测试的结果，学生们对分子几何有大量错误的信息和大量的误解。 “原子在共振结构中运动”和“具有三角锥形状的两个分子的键角不能不同”等陈述被认为是该研究确定的最重要的误解之一。
关键词：误解，分子几何，两层诊断测试，大学生。
In this research, the comprehension levels and misconceptions of university students on the subject of molecular geometry were determined via a two-tier diagnostic test consisting of 25 items developed by researchers. It was applied on 110 university students. The reliability and validity tests and item analyses were conducted in relation to the test, and the difficulty and discrimination indices of the items were detected. The reliability coefficient of the test was found to be 0.856 while the mean difficulty value of the test was 0.487. According to the findings obtained from the second tier of the test containing open end questions, the students had a great deal of wrong information and numerous misconceptions in relation to the molecular geometry. Such statements as “atoms move in the resonance structure” and “bond angles of two molecules having a trigonal pyramidal shape cannot be different” are counted among the most important misconceptions determined in the study.
Key words: Misconception, molecular geometry, two-tier diagnostic test, university students.