MA19.3.26
Recognize and describe polygons (up to 8 sides), triangles, and quadrilaterals (rhombuses, rectangles, and squares) based on the number of sides and the presence or absence of square corners.
Recognize and describe polygons (up to 8 sides), triangles, and quadrilaterals (rhombuses, rectangles, and squares) based on the number of sides and the presence or absence of square corners.
UP:MA19.3.26
Vocabulary
- Attribute
- Category
- Sub-category
- Opposite sides
- Angles
- Quadrilateral
- Triangle
- Pentagon
- Hexagon
- Septagon
- Heptagon
- Octagon
- Polygon
- Square
- Trapezoid
- Rhombus
- Rectangle
- Two-dimensional
Knowledge
Students know:
- that shapesin different categories may share attributes and that the shared attributes can define a larger category.
Skills
Students are able to:
- Identify two-dimensional shapes.
- Sort shapes according to number of sides.
- Sort quadrilaterals based on the presence or absence of square corners.
- Draw examples of squares, rectangles, and rhombuses.
- Draw quadrilaterals that are not rhombuses, rectangles, and squares.
Understanding
Students understand that:
- Attributes of a shape help make decisions about how to categorize the shape.
- Certain attributes are needed to belong to the subcategories of rhombuses, rectangles, and squares.
- Sometimes a shape does not have the attributes needed to belong to the subcategories of rhombuses, rectangles, and squares.
