4.G.A.2

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. Recognize right triangles as a category, and identify right triangles.

 
11 Lesson(s)
   

Regular vs. Irregular Polygons

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Kara Nelson
Environment: Urban
 
Big Idea:

Students will complete a powerpoint presentation and will explore the difference between regular and irregular polygons.

 
Favorites (8)
 
Resources (34)
 
Reflections (1)
students exploring
   

Math Foldables - Geometry Assessment

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Rose Monroe
Memphis, TN
Environment: Urban
 
Big Idea:

Foldables are alternative ways to assess students in math.

 
Favorites (9)
 
Resources (12)
 
Reflections (1)
   

Classification of Quadrilaterals

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Kara Nelson
Environment: Urban
 
Big Idea:

Students will investigate and classify quadrilaterals by their properties.

 
Favorites (11)
 
Resources (37)
 
Reflections (2)
exploration
   

Polygons

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Rose Monroe
Memphis, TN
Environment: Urban
 
Big Idea:

Polygons can be described by their attributes, such as lines and angles.

 
Favorites (3)
 
Resources (16)
 
Reflections (1)
vocabulary
   

Classification of Triangles

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Kara Nelson
Environment: Urban
 
Big Idea:

Students will use a Powerpoint Presentation and pictures of real-world triangles to classify triangles by properties.

Standards:
 
Favorites (4)
 
Resources (23)
 
Reflections (1)
measuring real world triangles
   

Triangles

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Rose Monroe
Memphis, TN
Environment: Urban
 
Big Idea:

Triangles can be identified as acute, right, or obtuse.

 
Favorites (4)
 
Resources (16)
 
Reflections (1)
student working on triangles
   

Quadrilaterals

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Rose Monroe
Memphis, TN
Environment: Urban
 
Big Idea:

Quadrilaterals are four-sided polygons that have distinctive attributes.

 
Favorites (6)
 
Resources (17)
 
Reflections (1)
quadrilaterals
   
4th Grade Math » Unit: Geometry
Mary Ellen Kanthack
Genoa City, WI
Environment: Rural
 
Big Idea:

Students learn to identify right triangles as they study the quilt blocks that were allegedly part of the controversial American Quilt Code abolitionists used to guide slaves to freedom.

 
Favorites (3)
 
Resources (23)
 
Reflections (3)
creating
   

Rotational Symmetry

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Rose Monroe
Memphis, TN
Environment: Urban
 
Big Idea:

By turning a shape to different measurements, the students can determine if a shape has rotational symmetry.

Standards:
 
Favorites (1)
 
Resources (12)
 
Reflections (1)
rotational symmetry
   

Tangrams with Grandfather Tang

5th Grade Math » Unit: Geometry
5th Grade Math » Unit: Geometry
Cathy Skinner
Scottsdale, AZ
Environment: Urban
 
Big Idea:

Creating rich tasks through integrating literature, positive interactions, and kinesthetic tasks when exploring geometric two dimensional shapes.

 
Favorites (23)
 
Resources (21)
 
Reflections (1)
labeling the tangram shape example
   

What is a Polygon?

4th Grade Math » Unit: Area & Perimeter
4th Grade Math » Unit: Area & Perimeter
Kara Nelson
Environment: Urban
 
Big Idea:

Students will study the difference between a polygon and nonpolygon and will apply their new learning by constructing a T-chart and comparison paragraph.

Standards:
 
Favorites (2)
 
Resources (18)
 
Reflections (1)
anchor
Common Core Math
 
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