# 9. Identify quadrilaterals with different attributes (A)

teaches Common Core State Standards CCSS.Math.Content.5.G.B.3 http://corestandards.org/Math/Content/5/G/B/3
teaches Common Core State Standards CCSS.Math.Content.5.G.B.4 http://corestandards.org/Math/Content/5/G/B/4
teaches Common Core State Standards CCSS.Math.Practice.MP3 http://corestandards.org/Math/Practice/MP3

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Lesson objective: Identify quadrilaterals with different attributes.

This lesson provides an opportunity for students to apply their knowledge and understanding of shared attributes to a real-life situation. Students are asked to construct picture frames that fit a given criteria for design with shared and unique attributes

Key Concept students will use:

• because figures may belong to categories and subcategories, we can classify figures in a hierarchy based on properties

Skills students will use:

• knowledge that lines are parallel if they are on the same plane and will never intersect, and perpendicular if they are on the same plane and intersect at a 90-degree angle (Grade 4, Unit 13)
• understand that objects have geometric properties that allow us to create categories of objects

Students engage in Mathematical Practice 3 (construct viable arguments and critique the reasoning of others) as they consider the claims of others in regards to the classification of two-dimensional figures, and make judgements on their reasoning based on their understanding of the classification of plane figures.

Key vocabulary:

• attribute
• congruent
• kite
• parallelogram
• trapezoid

Special materials needed:

• popsicle sticks (optional)
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