ANALYSIS OF ENRICHMENT OF FLAT SHAPE CONCEPT UNDERSTANDING IN ELEMENTARY SCHOOLS: INTRODUCTION OF FLAT SHAPES IN EVERYDAY CONCEPTS. Aljabar Journal of Mathematics Education, [S. l.], v. 1, n. 2, p. 67–71, 2025. Disponível em: https://journal.cerdasnusantara.org/index.php/aljabar/article/view/76.. Acesso em: 28 oct. 2025.