5.G.4– Classify two-dimensional figures in a hierarchy based on properties.

**Internet Resources (Videos, Websites, etc.)**

Arts Edge

K-5 Math Teaching Resources

- Triangle Hierarchy Diagram
- Triangle Hierarchy Diagram 2
- Regular/Irregular Hierarchy Diagram
- Quadrilateral Hierarchy Diagram

Khan Academy

NCTM Illuminations

- Building with Triangles
- Exploring Properties of Rectangles and Parallelograms Using Dynamic Software
- Exploring Properties of Rectangles and Parallelograms Using Dynamic Software
- Getting to Know the Shapes
- How Do You Build Triangles?
- How Many Triangles Can You Construct?
- Interactive Geometry Dictionary: Areas in Geometry
- More Work with Shapes
- Perimeter and Area of My Clubhouse
- Rectangles and Parallelograms
- Shape Cutter
- Shape Search
- Shape Tool
- Shapes Art
- Shapes on the Way Home
- Sort ‘Em
- What Can You Build with Triangles?
- What’s Important About Triangles?
- Working with Shapes

- Geometry: Identify planar and solid figures
- Geometry: Types of triangles
- Geometry: Open and closed shapes and qualities of polygons
- Geometry: Regular and irregular polygons
- Geometry: Number of sides in polygons
- Geometry: Which figure is being described?
- Geometry: Classify quadrilaterals

Science Net Links

XPMath Game