Interactive simulations are widely used to support conceptual learning in introductory physics, yet their impact depends strongly on how they are integrated into instruction. This study investigates the PhET Circuit Construction Kit: DC simulation when implemented in two instructional contexts in an Electricity and Magnetism course at a large private university in Chile: (i) an inquiry-based activity adapted and translated from the PhET community repository, and (ii) traditional lecture-based instruction using an instructor-projected simulation. Eight course sections taught by seven instructors participated (196 enrolled); 152 students completed a 10-item pre-test, 125 completed the post-test, and 81 completed both. Learning was assessed using a Spanish translation/adaptation of selected items from the DIRECT instrument, covering current (3 items), voltage (3), power (3), and circuit visual representations (1). We computed normalized gain ⟨g⟩ with error propagation and examined item-level response distributions grouped by simulation use versus non-use. Results show consistently low overall gains across sections, with modest differences by modality. Item-level analyses reveal mixed patterns: sections without simulations achieved medium gains on several items, while simulation-supported sections showed low or even negative gains on some concepts. At the same time, simulations appeared to reduce specific misconceptions (e.g., “charge is absorbed in the bulb”) and to support performance on a pictorial circuit-completion item, but were associated with increased selection of “progressive loss” voltage reasoning in a series-circuit item when explicit instructional guidance was limited. These findings suggest that simulations are not sufficient by themselves; they are most productive when paired with structured prompts and debriefing that connect simulation observations to scientifically accurate models and to symbolic circuit representations.
http://orcid.org/0000-0001-6066-355X
Universidad Andres Bello, Chile; Tecnologico de Monterrey, Mexico
[biography]
http://orcid.org/https://0000-0001-5880-1124
Tecnologico de Monterrey, Monterrey, Mexico; Universidad Andres Bello, Santiago, Chile
[biography]
The full paper will be available to logged in and registered conference attendees once the conference starts on June 21, 2026, and to all visitors after the conference ends on June 24, 2026