In the era of the Fourth Industrial Revolution, where convergent problem-solving is crucial, communication competence is highlighted as one of the essential competences for future generations. This study aims to develop a LEGO Serious Play(LSP) based program, a play-oriented educational approach, that enhances communication competence in early adolescents, and to conduct a multidimensional evaluation encompassing both efficacy and program evaluation. The experimental group consisted of 16 elementary school students (4th and 5th graders), and the control group consisted of 11 students. Pre- and post-tests on communication competence were conducted for both groups, and the experimental group also participated in both quantitative and qualitative evaluations of the program. Data were analyzed using the Mann-Whitney U test, Wilcoxon signed-rank test, Kendall's rank correlation analysis, and qualitative analysis. The results revealed a significant improvement in the ‘developing shared understanding’ sub-factor of communication competence within the experimental group. Evaluation of the program confirmed that the LSP approach was engaging and appropriate for early adolescents, and was perceived as play rather than traditional learning methods. This study is meaningful in that it demonstrates LSP as a valuable educational method that can provide early adolescents with meaningful learning experiences and serve as an approach for developing future competencies.