PAYADNYA, I. P. A. A.; PRAHMANA, R. C. I.; LO, J.-J.; NOVIYANTI, P. L.; ATMAJA, I. M. D. Designing area of circle learning trajectory based on “what-if” questions to support students’ higher-order thinking skills. Journal on Mathematics Education, [S. l.], v. 14, n. 4, p. 757–780, 2023. DOI: 10.22342/jme.v14i4.pp757-780. Disponível em: http://jme.ejournal.unsri.ac.id/index.php/jme/article/view/512. Acesso em: 4 mar. 2024.