Sort Quadrilaterals

10 min

Narrative

The purpose of this What Do You Know about _____ ? is for students to share what they know about quadrilaterals and how they can represent them. In previous courses students have drawn and described squares, rectangles, and rhombuses. They will revisit and classify all of these shapes over the next several lessons.

Launch

  • “What do you know about quadrilaterals?”
  • 1 minute: quiet think time
Teacher Instructions
  • Record responses.

Student Task

What do you know about quadrilaterals?

Sample Response

Sample responses:

  • They have 4 sides.
  • A square, rectangle, diamond, and trapezoid are examples of quadrilaterals.
  • They can have opposite sides that are equal to each other or parallel.
  • Some quadrilaterals have 90 degree angles.

Synthesis

  • “Draw some examples of quadrilaterals that you know.”
  • Invite a few students to share their quadrilaterals with the rest of the class.
  • “What is this shape called?” (a rectangle)
  • “How else can we draw a rectangle?” (The sides can be longer or shorter.)
Standards
Building Toward
  • 5.G.3·Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category. <em>For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.</em>
  • 5.G.B.3·Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category. <span>For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.</span>

15 min

20 min