This interactive media source asks students to determine which picture shapes are two-dimensional.

Second graders will be able to identify 2-dimensional shapes and tell the number of vertices and sides.

This task challenges a student to demonstrate understanding of the attributes of two-dimensional shapes.

The students will make the connection between 2-D and 3-D shapes using modeling clay and geometric solids and participate in an interactive web lesson. Students will make predictions about what 2-D shape they think will be made when they...

Describing 3D shapes in Pre-K and Kindergarten is now an expectation as it is a key geometry standard. This resource contains 3D shapes activities and resources for practicing this standard. Included are chants, videos, games, poetry,...

Analyze various shapes according to their reflective and rotational symmetries.

This site provides an in-depth definition of a two-dimensional figure and a three-dimensional figure. Related terms include arcs, vertices, polygon, and many more.

Two and three-dimensional geometric shape are explored in these exercises. Each activity has teacher notes, activity instructions, and a worksheet when necessary.

Demonstrates how to calculate the area of two-dimensional shapes using formulas. Covers parallelogram, triangle, trapezoid, and circle. Includes a video modeling how to find the area of a circle and a triangle. [0:59]