## Two-Dimensional Shapes

The purpose of the lesson is to develop student vocabulary and content knowledge in geometry. This lesson teaches students the names and attributes of two-dimensional figures, guiding them to applications and reasoning about the real world.

Note to Instructor: The lessons, in this unit, are intended for students who have zero to little knowledge and understanding of shapes, perimeter, and area. These lessons intend to develop the conceptual understanding of geometric basics.

#### GED Content Areas

Number and Ratios

## Two-Dimensional Shapes: Area and Perimeter

The purpose of the lesson is to teach students the concept of perimeter and area regarding two-dimensional figures, how they can be kinesthetically calculated, and what they are used for in real life.

#### GED Content Areas

Number and Ratios

## Three-Dimensional Shapes

The purpose of the lesson is to teach students proper names and attributes of three-dimensional figures. Students will learn the basics of three-dimensional shpaes including: how they are different/similar to two-dimensional figures, and how they unfold into "net".

#### GED Content Areas

Number and Ratios

## Three-Dimensional Shapes: Area and Nets

The purpose of the lesson is for students to understand that surface area is the area of all of the faces of the three-dimensional shape. Students will develop techniques for computing surface area by breaking the three-dimensional shape into nets.

Note: Due to the nature of the lesson, the three-dimensional shapes chosen should be: rectangular prism, cube, triangular prism, & rectangular pyramid. These shapes will be the easiest to manipulate using square graph paper.

#### GED Content Areas

Geometry

Number and Ratios

## Composite Shapes

The purpose of the lesson is to have students explore composite shapes and discover how they interact with two- and three-dimensional figures.

#### GED Content Areas

Number and Ratios