Showing posts with label 3-D. Show all posts
Showing posts with label 3-D. Show all posts

Thursday, February 25, 2010

3-D Shape Extravaganza!

By Ben, Sydney, Trent, and Ethan



In math, Mrs. Yollis’ students have been working on geometric 3-dimensional shapes. 

3-D shapes have flat faces, straight edges, and pointy vertices

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One 3-D shape is a cube. It has six square faces, twelve edges, and eight vertices. 


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 Another  3-D figure is the cylinder. This space figure has two circular faces, zero edges, and zero vertices. 


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Rectangular prisms have six faces, twelve edges, and eight vertices.  


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A recognizable  3-D shape is the cone. It looks like an ice cream cone. The cone has one face, zero edges, and one vertex. 


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One very unusual 3-D shape Mrs. Yollis’ students have learned about is the square pyramid. The square pyramid  has five faces (four triangular and one square base), eight edges, and five vertices. 


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The final 3-D shape our class  learned about is the sphere. It has no faces, edges, or vertices. 
Poor sphere.
:-(


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Here is a PhotoPeach show we put together!  See what the faces of the shapes look like!

3-D Shapes Extravaganza on PhotoPeach


3-D shapes are extremely fun to learn about!
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Thanks to Mr. and Mrs. Kim for the photo of the pyramid at the Louvre Museum!



 

Do you know any 3-D figures we didn’t mention?

How many faces, edges, and vertices did you find?

Friday, March 6, 2009

Space Figures!

In math, students have started a unit on geometry.

Today students partnered up to build 3-dimensional figures. Each group was given edges (toothpicks) and colored vertices (clay).


How many faces?
How many edges?
How many vertices?


How many space figures you can name?