Learning Resource Type

Classroom Resource

Varieties of Quadrilaterals

Subject Area

Mathematics

Grade(s)

4, 5

Overview

Bianca's friend Kim brings her a device for reaching objects while she's confined to her bed. The device is made up of collapsible parallelograms. The activity uses this episode to launch an investigation of different kinds of quadrilaterals (parallelograms, trapezoids, rectangles, squares, and rhombi) and the relationships among them.

    Mathematics (2019) Grade(s): 4

    MA19.4.28

    Identify two-dimensional figures based on the presence or absence of parallel or perpendicular lines or the presence or absence of angles of a specified size.

    Unpacked Content

    UP:MA19.4.28

    Vocabulary

    • Two-dimensional figure
    • Parallel lines
    • Perpendicular lines
    • Angle
    • Right triangle

    Knowledge

    Students know:
    • Two lines are parallel if they never intersect and are an equal distance apart.
    • Two lines are perpendicular if they are at right angles to each other.
    • A right triangle is a triangle that has one right angle.

    Skills

    Students are able to:
    • Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines.
    • Classify two-dimensional figures based on the presence or absence of angles of a specified size.
    • Identify right triangles.

    Understanding

    Students understand that:
    • shapes are categorized based on attributes they possess in common such as angle size, side length, side relationships (parallel and perpendicular).
    Mathematics (2019) Grade(s): 5

    MA19.5.21

    Classify triangles according to side length (isosceles, equilateral, scalene) and angle measure (acute, obtuse, right, equiangular).

    Unpacked Content

    UP:MA19.5.21

    Vocabulary

    • Classify
    • Polygon
    • Side measure
    • Angle measure
    • Isosceles
    • Equilateral
    • Scalene
    • Acute
    • Obtuse
    • Right
    • Equiangular

    Knowledge

    Students know:
    • Measurable attributes of triangles include length of side and angle measures.
    • Appropriate tools and units of measure for length of side and angle measures.

    Skills

    Students are able to:
    • Classify triangles according to side measures and angle measures.

    Understanding

    Students understand that:
    • triangles can be described and classified by their properties of side length, angle size, or cross-classify to include both side length and angle size.
    Mathematics (2019) Grade(s): 5

    MA19.5.22

    Classify quadrilaterals in a hierarchy based on properties.

    Unpacked Content

    UP:MA19.5.22

    Vocabulary

    • Quadrilateral
    • Hierarchy
    • Two-dimensional
    • Properties
    • Attributes
    • Polygon
    • Rectangle
    • Rhombus
    • Square
    • Trapezoid
    • Parallelogram

    Knowledge

    Students know:
    • properties or attributes of two-dimensional shapes.

    Skills

    Students are able to:
    • Classify quadrilaterals based on properties.

    Understanding

    Students understand that:
    • Quadrilaterals can be identified by general properties to more specific properties.
    • Properties belonging to a category of two-dimensional figures also belong to all subcategories of that category.
    Link to Resource

    CR Resource Type

    Lesson/Unit Plan

    Resource Provider

    PBS
    Accessibility
    License

    License Type

    CUSTOM
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