W. . Rungjiratananon, M. . Methinee Wongwanich Rumpagaporn, and S. Pitiporntapin, “Development and Preliminary Evaluation of an Outdoor STEM-Based Extracurricular Activity Toolkit for Supporting Grade 6 Students’ Entrepreneurial Skills in Problem-Solving, Creative Thinking, and Collaboration”, Sci. Ess. J, vol. 42, no. 2, pp. 289–305, Sep. 2026.