Triana, N. W.; Perangin-angin, R. B. B.; Ndona, Y.; Saragi, D. Development of TPACK Based Interactive Media With a Problem Based Learning Model to Improve The 21st Century Skills of Elementary School Students in Pancasila Education Subjects . j. kependidikan. has. penelit. kaji. kepustakaan. bid. pendidik. pengajaran. n.a. 2025, 11, 1082-1094.