Arsy, N. and Hanif, M. 2024. SMILE Application-Excursion to Space to Improve the Critical Thinking Skills of Fourth Grade Elementary School Students. Jurnal Penelitian dan Pengembangan Pendidikan. 8, 2 (Aug. 2024), 346–355. DOI:https://doi.org/10.23887/jppp.v8i2.59729.