When do students recognize relationships between molecular structure and properties? A longitudinal comparison of the impact of traditional and transformed curricula
When do students recognize relationships between molecular structure and properties? A longitudinal comparison of the impact of traditional and transformed curricula
复制标题
学生什么时候认识分子结构和性质之间的关系？
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
M. Cooper
中科院分区：
文献类型：
--
作者：
Sonia M. Underwood;David Reyes;M. Cooper
使用化学结构来预测和解释现象的能力对于化学的强大理解至关重要;然而，以前的研究表明，学生发现很难将结构和性质联系起来。在这项研究中，我们研究如何在大学化学课程的前两年，学生认识的结构和性能之间的联系的演变。此外，我们还调查了另一种普通化学课程（化学，生命，宇宙和一切（CLUE））如何影响学生在前两年的理解。使用离散时间生存分析来分析学生对来自刘易斯结构仪器（IILSI）的内隐信息的反应，我们发现，在传统课程中注册的学生需要多个学期才能认识到化学结构可以用作模型来预测化学和物理性质。然而，在CLUE课程的学生，往往使这种连接早于一个匹配的队列的学生从传统的课程，这种优势是保持整个有机化学的两个学期。在一般情况下，控制组需要一个额外的一年的有机化学达到相同的水平后，一年的普通化学的学生。
The ability to use a chemical structure to predict and explain phenomenon is essential to a robust understanding of chemistry; however, previous research has shown that students find it difficult to make the connection between structure and properties. In this study we examine how student recognition of the connections between structure and properties evolves during the first two years of college chemistry courses. In addition, we investigate how an alternative general chemistry curriculum (Chemistry, Life, the Universe and Everything (CLUE)) impacts students' understanding during these first two-years. Using discrete-time survival analysis to analyze student responses to the Implicit Information from Lewis Structures Instrument (IILSI), we found that it takes multiple semesters for students enrolled in a traditional curriculum to recognize that chemical structures can be used as models to predict chemical and physical properties. Students in the CLUE curriculum, however, tend to make this connection earlier than a matched cohort of students from a traditional curriculum, and this advantage is maintained throughout the two semesters of organic chemistry. In general, the control group takes an additional year of organic chemistry to reach the same level as the CLUE students after a year of general chemistry.