## Geometric Solids and Their Properties

3-5

In five interactive geometry investigations, students explore geometric solids and their properties. Within each lesson, students use visualization, spatial reasoning, and geometric modeling to solve problems.

### Math Content

Students will:

• Analyze characteristics and properties of three-dimensional geometric shapes.
• Develop mathematical arguments about geometric relationships.
• Construct various geometric solids using an interactive tool.
• Explore and create nets for various geometric solids.

### Getting to Know the Solids

3-5
Students are introduced to some of the basic polyhedra. Students explore the shapes of the faces of these solids.

### Study the Solids

3-5
In this interactive geometry investigation, students explore geometric solids and their properties. Specifically, students count the number of faces, edges, and corners (vertices) in various solids.

### Looking for Patterns

3-5
Students discover Euler's Formula, a way of calculating the number of faces, edges, and vertices of geometric solids.

### Construct a Solid

3-5
Students construct physical models of geometric solids.

### Making A Shape Jacket

3-5
Students identify which geometric solids can be made from given nets. Students also create nets for common geometric solids.