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Revision workshops in elementary mathematics enhance student performance in routine laboratory calculations

机译:小学数学修订研讨会提高了学生在常规实验室计算中的表现

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摘要

The ability to understand and implement calculations required for molarity and dilution computations that are routinely undertaken in the laboratory are essential skills that should be possessed by all students entering an undergraduate Life Sciences degree. However, it is increasingly recognized that the majority of these students are ill equipped to reliably carry out such calculations. There are several factors that conspire against students' understanding of this topic, with the alien concept of the mole in relation to the mass of compounds and the engineering notation required when expressing the relatively small quantities typically involved being two key examples. In this report, we highlight teaching methods delivered via revision workshops to undergraduate Life Sciences students at the University of Nottingham. Workshops were designed to 1) expose student deficiencies in basic numeracy skills and remedy these deficiencies, 2) introduce molarity and dilution calculations and illustrate their workings in a step-by-step manner, and 3) allow students to appreciate the magnitude of numbers. Preworkshop to postworkshop comparisons demonstrated a considerable improvement in students' performance, which attenuated with time. The findings of our study suggest that an ability to carry out laboratory calculations cannot be assumed in students entering Life Sciences degrees in the United Kingdom but that explicit instruction in the form of workshops improves proficiency to a level of competence that allows students to prosper in the laboratory environment.
机译:理解和实施实验室中常规进行的摩尔浓度和稀释度计算所需的计算能力是所有进入本科生命科学学位的学生都应具备的基本技能。但是,人们越来越认识到,这些学生中的大多数没有能力可靠地进行这种计算。有几个因素阻碍了学生对这一主题的理解,其中摩尔与化合物的质量有关的外来概念以及在表达通常涉及的相对少量时所需的工程标志是两个关键示例。在本报告中,我们重点介绍了通过修订研讨会为诺丁汉大学的生命科学本科学生提供的教学方法。讲习班的目的是:1)揭露学生在基本算术技能上的不足,并纠正这些不足; 2)介绍摩尔浓度和稀释度计算,并逐步说明其工作原理;以及3)让学生欣赏数字的数量。课前工作间与课后工作间的比较表明,学生的表现有很大提高,但随着时间的推移而减弱。我们的研究结果表明,在英国攻读生命科学学位的学生不能假定具备进行实验室计算的能力,但是以讲习班形式进行的明确指导可以将能力提高到一定水平,使学生能够在实验室中繁荣发展。实验室环境。

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