Grade 3 Math TEKS 3.6A:Classifying Geometric Figures

Learning Target: I can classify two-dimensional figures based on attributes.

Focuses On:

• Vocabulary to describe two-dimensional attributes
• Hierarchical configuration of quadrilaterals
• Solving riddles based on attributes

Builds On:

2.8C:

Classify and sort polygons with 12 or fewer sides according to attributes, including identifying the number of sides and number of vertices

Next Level:

4.6D:

Classify 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

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This lesson is designed to support student understanding of classification of two-dimensional figures and solidify vocabulary to describe attributes. Students use a hierarchy to understand quadrilaterals, explore vocabulary, and move into classification riddles to determine the two-dimensional shape.

The one instructional block is focused on classifying 2D figures. Students are introduced to the shape names and how to classify them based on their attributes.

Visual models of shapes and pictorial representations are integrated throughout the lesson in order to support student understanding.

Learning Target: I can sort two-dimensional figures based on their attributes.

Focuses On:

• Reinforce vocabulary to identify and classify two-dimensional figures such as: attribute, triangle, quadrilateral, polygon, parallelogram, vertex, etc.
• Sorting two-dimensional shapes based on sides, angles, and attributes

Builds On:

2.8C:

Classify and sort polygons with 12 or fewer sides according to attributes, including identifying the number of sides and number of vertices

Next Level:

4.6D:

Classify 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

Read More:

This lesson is designed to support student understand of two-dimensional shapes and common attributes, including congruent sides and number of sides to a shape.

The three instructional blocks focus on sorting by sides, sorting by congruent sides and then sorting based on attributes.

The first instructional block has students counting the number of sides of 2D shapes and then categorizing them.

The second instructional block focuses on sorting shapes based on their side lengths being congruent or non-congruent.

The third instructional block has students sort shapes based on attributes such as how many sides and vertices it has, whether it has congruent or non-congruent side lengths, and if it contains special patterns like equal sides or parallel lines.

Visual models of shapes and pictorial representations are integrated throughout the lesson in order to support student understanding.

Learning Target: I can identify and classify three-dimensional figures.

Focuses On:

• Understanding attributes such as vertices, edges, and faces
• Understanding "depth" and how that creates a 3D figure

Builds On:

2.8B:

Classify and sort three-dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes as special rectangular prisms), and triangular prisms, based on attributes using formal geometric language

Next Level:

While there is not a direct 4th grade standard correlation, understanding and classifying three-dimensional figures sets students up to understand and calculate volume in higher grades.

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This lesson is designed to ensure student understanding of how to classify 3D figures by looking at their attributes.

The one instructional block is focused on classifying 3D figures. Students are introduced to the shape names and how to classify them based on their attributes including: vertices, edges and faces.

Visual models of shapes and pictorial representations are integrated throughout the lesson in order to support student understanding.

Learning Target: I can sort three-dimensional figures based on their attributes.

Focuses On:

• Understanding attributes such as vertices, edges, and faces
• Using attributes to sort three-dimensional figures into categories

Builds On:

2.B:

Classify and sort three-dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes as special rectangular prisms), and triangular prisms, based on attributes using formal geometric language.

Next Level:

4.6D:

Classify 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.

Read More:

This lesson is designed to solidify vocabulary associated with three-dimensional figures. The formal geometric language supports their ongoing learning of two and three-dimensional shapes and volume in upper grade levels.

The one instructional block focuses on sorting figures by examining their attributes and then categorizing them.

Visual models of shapes and pictorial representations are integrated throughout the lesson in order to support student understanding.