Wednesday, February 20, 2013

Quadrilaterals: Special Names

In our polygon unit, we are learning about four-sided figures called


Many  people were confused about why some shapes have more than one name.  Here are some tutorials to help you learn about quadrilaterals.

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What is a parallelogram?

Here is an interactive parallelogram.

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What is a rectangle?

Here is an interactive rectangle.

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What is a rhombus?

Here is an interactive rhombus.

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What is a square?

Here is an interactive square.

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Maybe you'd like to watch the Polygon Movie again and meet these quadrilaterals in person!  

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Have you used our quadrilateral tutorials? 

Which tutorial helped the most?


  1. I love your classroom blog! We will be reviewing quadrilaterals soon in the 4th grade. My students love reading the story about the quadrilateral "family." Do you know all the relatives of the quadrilateral?

    Mrs. Vilas

  2. Dear Mrs. Yollis and class,
    Great math movies and tutorials! I love geometry much better than other kinds of math. These movies help everyone learn important differences between the shapes.
    Do you start seeing shapes around you now when you are outside?
    Mrs. Hembree

  3. Hi Mrs. Yollis' class. My student nominated your class as the best blog. Here is her post:

    Mrs. Vilas
    New Jersey, USA


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