Panjaitan, C.J.E. and Sipahutar, H. 2026. TGT-based crossword e-worksheets: interest, activity, and learning outcomes in biology education. Biosfer: Jurnal Pendidikan Biologi. 19, 1 (Feb. 2026), 253–264. DOI:https://doi.org/10.21009/biosferjpb.60767.