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Periodic Trends in a Simulated Water Treatment Station: A Methodology to Engage Students in the Lower Levels of Inorganic Chemistry Learning
Journal of Chemical Education ( IF 3 ) Pub Date : 2020-07-01 , DOI: 10.1021/acs.jchemed.0c00230
Caio Bezerra de Castro 1 , Ivo Freitas Teixeira 1 , Caterina G. C. Marques Netto 1
Affiliation  

The comprehension of the reactivity of the elements is an important goal to be achieved in undergraduate courses in inorganic chemistry. Therefore, at Universidade Federal de São Carlos (UFSCar), the B.Sc. in chemistry has a laboratory course dedicated to the chemistry of the elements. However, we have noticed a decrease in students’ interest in this discipline over the years. Hence, we decided to use inquiry-based methodology in a full semester of an experimental laboratory of “chemistry of the elements” in an attempt to increase their interest. As a guideline, we used the theme of water treatment to engage them in solving problems related to inorganic chemistry reactivity and noticed greater enthusiasm toward the curriculum and research methodologies. Furthermore, at the end of the course, both methodologies (traditional and inquiry-based) were evaluated by an anonymous questionnaire. By using a rating from 0 to 5 (ranging from worst to best), it was evident that the mean rate for the new methodology (4.2) was significantly higher than the rate given to the traditional methodology (2.3). The improvement in the overall performance of the report grades in comparison to the traditional methodology over the inquiry-guided one was complementary to the questionnaire, indicating that poor performance was diminished or even depleted. We believe that this methodology improved the students’ level of confidence and knowledge, indicating that it could be applied to any other laboratory course.

中文翻译:

模拟水处理站的周期性趋势:一种使学生参与较低水平的无机化学学习的方法

对元素反应性的理解是无机化学本科课程要实现的重要目标。因此,在圣卡洛斯联邦大学(UFSCar),理学士学位。化学专业有专门针对元素化学的实验室课程。但是,多年来,我们注意到学生对该学科的兴趣有所下降。因此,我们决定在“元素化学”实验实验室的整个学期中使用基于查询的方法,以提高他们的兴趣。作为指导,我们以水处理为主题,使他们参与解决与无机化学反应性有关的问题,并注意到他们对课程和研究方法的热情更高。此外,在课程结束时,两种方法(传统方法和基于查询的方法)均通过匿名问卷进行了评估。通过使用0到5(从最差到最好)的等级,很明显,新方法的平均比率(4.2)明显高于传统方法的平均比率(2.3)。与传统的调查方法相比,报告等级的整体绩效比调查指导的方法有所改进,这是对调查表的补充,表明绩效下降的现象已减少甚至减少。我们认为,这种方法可以提高学生的自信心和知识水平,表明该方法可以应用于任何其他实验室课程。显然,新方法的平均比率(4.2)明显高于传统方法的平均比率(2.3)。与传统的调查方法相比,报告等级的整体绩效比调查指导的方法有所改进,这是对调查表的补充,表明绩效下降的现象已减少甚至减少。我们认为,这种方法可以提高学生的自信心和知识水平,这表明该方法可以应用于任何其他实验室课程。显然,新方法的平均比率(4.2)明显高于传统方法的平均比率(2.3)。与传统的调查方法相比,报告等级的整体绩效比调查指导的方法有所改进,这是对调查表的补充,表明绩效下降的现象已减少甚至减少。我们认为,这种方法可以提高学生的自信心和知识水平,这表明该方法可以应用于任何其他实验室课程。表示效果不佳甚至减少了。我们认为,这种方法可以提高学生的自信心和知识水平,这表明该方法可以应用于任何其他实验室课程。表示效果不佳甚至减少了。我们认为,这种方法可以提高学生的自信心和知识水平,这表明该方法可以应用于任何其他实验室课程。
更新日期:2020-08-11
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