Introduction:

During the last decade, the traditional model of medical education was widely debated, and recently, the Covid-19 pandemic added new challenges in teaching and learning in medical education. The Worked Example is an instructional tool in which an expert shows a detailed problem solution for a learner.

Objective:

This study aimed to compare, in an experimental study with medical students, lectures in online format with Worked Example for teaching chest tomography.

Method:

Experimental study through an educational intervention with medical students in the initial and final stages of clinical practice.

Result:

Analysis of variance of repeated measures (ANOVA) was used in the statistical analysis. There was a significant difference between the grades before and after training (F1; 74 = 46.008; p < 0.001) and between the course phases studied (F2; 148 = 19.452; p < 0.001). There was no statistically significant difference between the groups (F2; 74 = 1.401; p = 0.240). There was no significant difference in mental effort reported in the comparison between groups (F1; 69 = 0.092; p = 0.762), but students in the 2th year had a significantly higher effort score.

Conclusion:

Worked Example, which is a good technique for students and suitable for digital formats, was equally effective as lecture, a well-known instructional method for teaching radiology.

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