## 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)

4th Grade Math » Unit: Geometry
Environment: Urban

Big Idea:

#### Students will investigate and classify quadrilaterals by their properties.

Standards:

Favorites (18)

Resources (37)

Reflections (2)

4th Grade Math » Unit: Geometry
Environment: Urban

Big Idea:

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

Standards:

Favorites (9)

Resources (34)

Reflections (1)

4th Grade Math » Unit: Geometry
Memphis, TN
Environment: Urban

Big Idea:

Standards:

Favorites (11)

Resources (12)

Reflections (1)

### Classification of Triangles

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Environment: Urban

Big Idea:

Standards:

Favorites (7)

Resources (23)

Reflections (1)

### Polygons

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Memphis, TN
Environment: Urban

Big Idea:

Standards:

Favorites (5)

Resources (16)

Reflections (1)

### Triangles

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Memphis, TN
Environment: Urban

Big Idea:

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

Standards:

Favorites (6)

Resources (16)

Reflections (1)

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
Memphis, TN
Environment: Urban

Big Idea:

#### Quadrilaterals are four-sided polygons that have distinctive attributes.

Standards:

Favorites (10)

Resources (17)

Reflections (1)

4th Grade Math » Unit: Geometry
Genoa City, WI
Environment: Rural

Big Idea:

Standards:

Favorites (6)

Resources (23)

Reflections (3)

### Rotational Symmetry

4th Grade Math » Unit: Geometry
4th Grade Math » Unit: Geometry
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)

5th Grade Math » Unit: Geometry
Scottsdale, AZ
Environment: Urban

Big Idea:

Standards:

Favorites (28)

Resources (21)

Reflections (1)

### What is a Polygon?

4th Grade Math » Unit: Area & Perimeter
4th Grade Math » Unit: Area & Perimeter
Environment: Urban

Big Idea:

Standards:

Favorites (3)

Resources (18)

Reflections (1)
Common Core Math