Identifying 2D shapes in common objects and sorting according to shapes connects the real world to learning shape names and attributes.

On this interactive site, students learn to identify squares, circles, and triangles.

Students can use this interactive site to practice various geometric concepts such as rotations, reflections, translations, tesselations and geometric patterns.

Guide a mummy safely through the burial chambers of a pyramid as you solve length and area problems in basic to advanced geometry. There are four game zones that deal with circles and triangles, quadrilaterals, the Pythagorean Theorem,...

For this lesson, students will explore self-portraiture by looking at classical portrait paintings, such as Diego Velazquez's La Infanta Margarita or Raphael's Portrait of Baldassare Castiglione. A close look at these works reveals...

Visit this African village and learn about symmetry and parts of 2D shapes. Users can first watch a video that helps with the concepts of finding a vertex and a line of symmetry. They can then practice their knowledge on four activities...

See this lesson to help students to learn about angles and identify the number of angles in 2D shapes. Lesson plans includes introductory activity, guided practice, and independent practice.

[Free Registration/Login may be required to access all resource tools.] Students watch a video overview and attempt practice problems on identifying rectangles, squares, circles and triangles.

[Free Registration/Login may be required to access all resource tools.] Students watch a video and attempt practice problems on classifying rectangles, squares, circles and triangles.

Students will tell if a shape is 2-dimensional or 3-dimensional.

[Free Registration/Login may be required to access all resource tools.] The video defines a composite shape and shows how to determine the total number of triangles in the given shape. The video is followed by practice problems to assess...

This interactive exercise focuses on discovering the relationships between two and three-dimensional shapes.

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]

[Free Registration/Login may be required to access all resource tools.] The video discusses a brief overview of circles, rectangles, squares, and triangles and helps students determine which shape is shown and why. The video is followed...

[Free Registration/Login may be required to access all resource tools.] Students watch a video and then attempt practice problems on how to complete a whole picture with some missing parts.

In this lesson plan, 7th graders answer word problems to determine the area of a circle.

[Free Registration/Login Required] Students determine whether a hexagon can tessellate or not. Click challenge me to answer practice questions and click learn more to watch a video.

[Free Registration/Login Required] Students determine if squares can tessellate. Click challenge me to answer practice questions and click learn more to watch a video.

[Free Registration/Login Required] Students will explore tessellations and whether a polygon can tessellate. Click challenge me to answer practice questions and click learn more to watch a video.

User will drag the vertices of the quadrilaterals to decide on the best possible classification.

Browse resources related to second-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.

Browse resources related to third-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.

Browse resources related to fourth-grade math standards. Click on a topic for interactive lessons, videos, and extra practice.

In this video from Cyberchase, Bianca breaks her friend's tabletop when she's practicing dance moves in his living room. She uses measurement and geometry to get a new piece of wood that will fit the table exactly. The accompanying...