[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.

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

Students learn how to categorize plane figure polygons using Venn Diagrams with this computer based tool.

[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.

Discover how the geometric shape of an object directly relates to its usefullness in this math challenge from the NCTM Math Challenges for Families collection. A one page activity that you can print or download.

Browse resources related to third-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...

[Free Registration/Login may be required to access all resource tools.] The video defines a triangle by the number of sides and then determines which of the figures in the diagram are triangles. The video is followed by additional...

Students make a series of geometric drawings of points, obtuse angles, rays, polygons, and the like. Each child is given one but not allowed to show anyone else. The drawing is then taped to the back of the child in front of them. The...

[Free Registration/Login Required] Students will learn the 6 solid figures and characteristics, including face, edge, and vertices. Students will learn the plane figures when looking at the solid figures. Students will then take a 10...

[Free Registration/Login Required] The teacher will use this lesson plan flipchart to review geometry plane figures.

How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...

This interactive diagram focuses on sorting polygons by common properties and then you select the correct label for each section of the Venn Diagram.

Brush up on your math skills relating to rectangles then try some practice problems to test your understanding.

Brush up on your math skills relating to squares then try some practice problems to test your understanding.

This website has basic definitions for most polygons, regular and irregular.

In this lesson make a tangram and experiment with it to make new designs and pictures.

Defines polygons and explores characteristics, types of polygons, and how to calculate the area of a polygon.

In Spanish. In these activities you can develop the concept of trajectory. Try to trace the figures without lifting your pencil.

Discusses the radius, diameter, circumference, and area of a circle.

In this video segment [3:25] from Cyberchase, a plant expert shows Bianca the patterns and symmetry found in nature.