Parameterization of experimenters' characteristics for safety evaluation in laboratories -Mathematical analysis of inquiry-based learning in experiments involving neutralization titration-

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  • 実験安全評価のための作業者特性の数値化 ─ 中和滴定操作を例とした実験操作における探索的学習についての数理的解析─
  • 実験安全評価のための作業者特性の数値化 : 中和滴定操作を例とした実験操作における探索的学習についての数理的解析
  • ジッケン アンゼン ヒョウカ ノ タメ ノ サギョウシャ トクセイ ノ スウチカ : チュウワ テキテイ ソウサ オ レイ ト シタ ジッケン ソウサ ニ オケル タンサクテキ ガクシュウ ニ ツイテ ノ スウリテキ カイセキ

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Abstract

Parameterization of experimenter behavior characteristics involved in experiments in university laboratories is expected to provide effective information for conducting safe experiments. The authors propose a method to parameterize experimenter behavior characteristics in water measurement operations. In this study, we focus on inquiry-based learning and use a mathematical model to categorize experimenters, quantify characteristics of experimenters, and analyze the characteristics of inquiry-based learning operations. The liquid level behaviors of NaOH(aq) added from burette in each trial produced an indicator, which was fitted to five trials for each experimenter by a logistical curve that is well known as the learning curve, revealing that experimenter characteristics in inquiry-based learning can be parameterized. Simultaneously, the shape of the learning curves showed that experimenters can be categorized into two types, Sshaped learning and gradual learning. In addition, mathematical model analysis was conducted to compare titration after experimenters found the target value with water measurement. After experimenters determined the target value, it was found that titration was a similar operation with water measurement.

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