1. Oktaviani, H.I., et al.: The most important soft skill for students 21st century learning: contribution technology-enhanced in classroom. In: 2019 5th International Conference on Education and Technology (ICET), Malang, Indonesia (2019)
2. Ismail, A., Razali, S., Hashim, S., Abiddin, N.Z., Masek, A., Abd Samad, N.: The integration of problem-based learning in generating 21st century skills. In: 2021 IEEE 12th Control and System Graduate Research Colloquium (ICSGRC 2021), Shah Alam, Malaysia (2021)
3. Eickholt, J., Johnson, M.R., Seeling, P.: Practical active learning stations to transform existing learning environments into flexible, active learning classrooms. IEEE Trans. Educ. 64(2), 95–102 (2021)
4. Soneral, P.A.G., Wyse, S.A.: A scale-up mock-up: comparison of student learning gains in high-and low-tech active-learning environments. CBE Life Sci. Educ. 16(12), 1–15 (2017)
5. Dewey, J.: How We Think: A Restatement of the Relation of Reflective Thinking to the Educative Process (1910). Heath, Boston (1933)