Designing a hypothetical learning trajectory for Lobachevskian geometry through validated cultural artefacts: a design study with explicit analogy boundaries. Pilar Nusantara: Journal of Education, [S. l.], v. 1, n. 1, 2026. Disponível em: https://edu.jurnalpilarnusantara.id/pnje/article/view/1. Acesso em: 12 sep. 2026.