Click Before You Pipette: Building Foundational Pipetting Skills and Confidence With an Interactive Prelaboratory Simulation.

Correctly setting and reading a manual air displacement micropipette is an essential yet challenging skill for life-science students. The incorrect delivery of volumes affects both experimental outcomes and data interpretation, potentially reducing student confidence in the laboratory. To address this issue, we developed and evaluated an interactive simulation using Articulate Storyline. Our novel approach isolated and addressed the critical cognitive task of reading a micropipette dial from the physical skill of using the tool. This intervention offers a uniquely scalable and cost-effective solution compared to the use of physical micropipettes. Existing training often focuses on the physical action, leaving a gap for a scalable digital tool that allows students to first master the cognitive challenge of reading the dial. Using a prepost mixed methods design, we measured student perceptions of the approach and changes in student performance across confidence, unit conversion, and micropipette dial reading accuracy. Students at two independent universities showed significant improvements in self-rated confidence and accuracy in reading micropipette scales after using the simulation. Student feedback was highly positive regarding the benefits of the simulation in learning these skills and enhancing their self-efficacy. This simulation is an ideal preparatory tool within a blended learning framework, significantly improving student confidence and accuracy. By mastering the cognitive prerequisite in a safe, virtual environment, students are better prepared for effective hands-on practice in a face-to-face setting.