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Standard 3
Students will describe and analyze attributes of two-dimensional shapes.

• Figures and Polygons
This website offers picture examples and written definitions of different polygons and terms.
• Jigsaw Puzzle
So you think you're good at jigsaw puzzles? Use fractions and scale to place the puzzle pieces.
• Math Cats Tessellation Town
Students manipulate interactive shapes to help learn about and develop tessallations.
• National Library of Virtual Manipulatives:Geometry
Virtual manipulatives related to the NCTM Geometry standard for grades 3 - 5.
• PBS Kids Symmetrizer
Explore symmetry with an cool, online Kaleidoscope.
• Puzzle Parlor
Twelve interactive online games from the puzzle makers at Kadon Enterprises, Inc. designed to give students practice with problem solving skills using mathematical and spatial sense intelligence.
• Reflection Symmetry
This website demonstrates reflection symmetry with animated folding of different shapes. Students identify and draw lines of symmetry on triangles, squares, circles, and rectangles.
• Shapes and Poetry
At the conclusion of this lesson students will recognize geometric figures, draw and describe geometric figures, and interpret positional words.
• Spaceship Builder
Create a fleet of Cyberspaceships using your area and perimeter knowledge.
• Tangram Game
Tangram is an ancient game that originated in China. Try to create the shape shown using all 7 pieces provided.
• Visualizing Transformations
The interactive figures in this four-part example allow a user to manipulate a shape and observe its behavior under a particular transformation or composition of transformations.

These materials have been produced by and for the teachers of the State of Utah. Copies of these materials may be freely reproduced for teacher and classroom use. When distributing these materials, credit should be given to Utah State Office of Education. These materials may not be published, in whole or part, or in any other format, without the written permission of the Utah State Office of Education, 250 East 500 South, PO Box 144200, Salt Lake City, Utah 84114-4200.