KURNIAWATI, Labibah; AMIR, Mohammad Faizal. Development of learning trajectory of perimeter and area of squares and rectangles through various tasks. Premiere Educandum : Jurnal Pendidikan Dasar dan Pembelajaran, [S. l.], v. 12, n. 1, p. 54 – 68, 2022. DOI: 10.25273/pe.v12i1.12121. Disponível em: https://journal-fkip.unipma.ac.id/pe/article/view/43. Acesso em: 12 nov. 2026.