The purpose of this What Do You Know about Trapezoids? is for students to share what they know about and how they can represent trapezoids.
Launch
“What do you know about trapezoids?”
1 minute: quiet think time
Teacher Instructions
Record responses.
Student Task
What do you know about trapezoids?
Sample Response
Sample responses:
Trapezoids are quadrilaterals.
The red pattern block is a trapezoid.
They have one pair of parallel sides.
I have heard someone call that shape a trapezoid. They have only one pair of parallel sides.
Activity Synthesis (Teacher Notes)
“Draw some examples of trapezoids.”
Invite a few students to share their trapezoids with the rest of the class.
“How do you know these are trapezoids?” (They have one pair of parallel sides or they have at least one pair of parallel sides.)
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>
20 min
15 min
Knowledge Components
All skills for this lesson
No KCs tagged for this lesson
Trapezoids
10 min
Narrative
The purpose of this What Do You Know about Trapezoids? is for students to share what they know about and how they can represent trapezoids.
Launch
“What do you know about trapezoids?”
1 minute: quiet think time
Teacher Instructions
Record responses.
Student Task
What do you know about trapezoids?
Sample Response
Sample responses:
Trapezoids are quadrilaterals.
The red pattern block is a trapezoid.
They have one pair of parallel sides.
I have heard someone call that shape a trapezoid. They have only one pair of parallel sides.
Activity Synthesis (Teacher Notes)
“Draw some examples of trapezoids.”
Invite a few students to share their trapezoids with the rest of the class.
“How do you know these are trapezoids?” (They have one pair of parallel sides or they have at least one pair of parallel sides.)
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>