Integrating Measurement Uncertainty Analysis into Laboratory Education for the Development of Critical Thinking and Practical Skills

Abstract

Laboratories that have successfully passed an accredited laboratory program need to validate their methods, a requirement that should extend to all types of testing laboratories. Such validation includes the performance of uncertainty analysis. However, the teaching and practice of concepts of measurement uncertainty analysis remain underemphasized in most science degrees. In this study, a laboratory session is proposed to introduce students to the in-house calibration of a laboratory balance. It provides valuable hands-on experience for students to understand measurement uncertainty analysis, particularly in the context of balance calibration. By involving students in calculating uncertainty and critically evaluating the relevance of their results, the session not only teaches specific skills but also nurtures important aspects of scientific thinking. A bottom-up approach is employed in which students use their knowledge to assess the significance of information. This proves to be an effective method for promoting critical thinking, encouraging students to actively engage with the material and apply their judgment, which is crucial for developing their scientific reasoning abilities. Furthermore, by incorporating concepts such as the minimum weight for accurate measurements, practical relevance is added to the exercise, helping students understand the real-world implications of uncertainty analysis in experimental work. By bridging theoretical concepts with practical applications, students gain a deeper appreciation of the importance of uncertainty in scientific research.