Sistematização de Figuras Planas: Lados e Vértices

Section role: supports the 'Sistematizando Conhecimentos' section while the teacher bridges the group discoveries from the geometric expedition to formal mathematical terminology. Slides: (1) Title — 'De Lados a Vértices'; (2) Figuras Abertas e Fechadas — bullets: comparison of curves and straight lines, definition of closed boundaries; (3) O que são Polígonos — bullets: definition as closed figures formed by straight segments; (4) Vértices e Lados — bullets: identifying 'pontas' as vertices and 'linhas' as sides; (5) Triângulos — bullets: 3 sides, 3 vertices, example with a traffic sign; (6) Quadriláteros — bullets: 4 sides, 4 vertices, example with a square table; (7) Pentágonos e Hexágonos — bullets: 5 and 6 sides respectively, counting exercise; (8) Resumo Visual — bullets: comparison table of names, sides, and vertices; Closing slide: 'Quantos lados e vértices tem a figura que desenhei?' — hands control back to the teacher to start individual practice.