Annenberg Foundation
Annenberg Learner: Geometry 3 D Shapes: Polyhedra, Prisms, and Pyramids
An introduction to a type of three-dimensional shape called a polyhedron. See examples and play with an interactive animation, showing the faces, vertices, and edges of pyramids, which are a type of polyhedron.
Khan Academy
Khan Academy: Area of Composite Shapes
Practice finding the areas of complex shapes that are composed of smaller shapes. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Crayola
Crayola: Mandala Geometry
Combine geometric designs while honoring the entire universe. Discover how colors and shapes have meaning in traditional mandala art forms.
PBS
Pbs Learning Media: Making Rock Candy
In this video segment from Cyberchase, two friends make rock candy while learning about 2-D and 3-D shapes.
Texas Instruments
Texas Instruments: Traveling Shapes Motion Geometry
In this activity, students describe how to move a shape from one place to another in a plane. They learn about translations, rotations, and line reflections. [Requires Adobe Reader.]
Rice University
Rice University: Cynthia Lanius: Geometry Online
This is a site for geometry lovers. Chock-full of puzzles, games, interesting geometry facts, and online activities.
National Council of Teachers of Mathematics
Nctm: Illuminations: Interactive Geometry Dictionary: Lines in Geometry
The applets in this Interactive Geometry Dictionary (IGD) will show you how to find the area of some common shapes.
CK-12 Foundation
Ck 12: Classification of Soild Figures: Naming Shapes
[Free Registration/Login Required] Students will click on the point of the word and drag it to the correct figure. Click challenge me to answer practice questions and click learn more to watch a video.
ClassFlow
Class Flow: Geometry 2 D Shapes
[Free Registration/Login Required] This flipchart introduces basic geometric shapes and gives students practice finding geometric shapes in everyday objects.
ClassFlow
Class Flow: Geometry Plane Figures
[Free Registration/Login Required] The teacher will use this lesson plan flipchart to review geometry plane figures.
Houghton Mifflin Harcourt
Houghton Mifflin Harcourt: Saxon Activity Center Real World Investigation: The Geometry of Quilts [Pdf]
Investigating designs and shapes in quilts around the world is the activity in this internet exploration. Learners will also design their own quilt on paper or on the computer. Acrobat Reader required.
NumberNut
Number Nut: Shapes, Symbols, and Colors: 3 D Shapes
This lesson describes three dimensional shapes and provides two interactive practice activities.
ClassFlow
Class Flow: Shapes, Area, and Perimeter
[Free Registration/Login Required] Students will begin practice identifying shapes. Then they will practice solving area and perimeter problems, for different shapes.
Annenberg Foundation
Annenberg Learner: Geometry: 3 D Shapes: Surface Area and Volume
Learn how to calculate the surface area and volume of rectangular prisms and cylinders. Four interactive animations, preceded by simple instructions, guide you through the process of calculating area and volume.
Mangahigh
Mangahigh: Shape: Recognize a Cube and a Rectangular Prism
Test your knowledge of rectangular prisms and cubes.
Mangahigh
Mangahigh: Shape: Understand Position, Direction and Movement
Test your knowledge of position, direction, and movement.
Mangahigh
Mangahigh: Shape: The Angles Inside a Triangle
Test your knowledge of the missing angle measure.
Mangahigh
Mangahigh: Shape: Types of Triangle
Test your knowledge of triangles by identifying the different types.
Mangahigh
Mangahigh: Shape: The Angles Inside a Quadrilateral
Test your knowledge of the sum of angles inside a quadrilateral.
Mangahigh
Mangahigh: Shape: Recognize a Square and Rectangle
Test your knowledge of the similarities and differences between squares and rectangles.
Mangahigh
Mangahigh: Shape: Facts About Quadrilaterals
Test your knowledge of identifying quadrilaterals.
Mangahigh
Mangahigh: Shape: Area of a Rectangle
Determine the area of a rectangle by multiplying the sides.
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