Wednesday, February 22, 2012

Video Tutorials: What Are Quadrilaterals?

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. Dear Mrs. Yollis and old students,

    I liked how you introduced the quadrilaterals like: square, rhombus, rectangle, rhombus, and parallelogram.

    My favorite quadrilateral is the square because it is called five different things. The five names are: square, rhombus, rectangle, quadrilateral, and parallelogram. I also liked the Polygon Movie. I liked how Circle was left out so you can teach us that circle is not a polygon. At the end she was accepted into another group of shapes.


  2. Dear Mrs. Yollis' class,

    I love, love, love your geometry videos. I think that it makes an often difficult concept easy to understand.

    Thank you for sharing them,

    Mrs. Neuse
    Lakeway, Texas

  3. Dear Mrs.Yollis and Class,

    One of the things I learned was that a parallelogram with four equal sides is a rhombus. I thought your videos where very creative and interesting too.

    Lexi a 49'er

  4. Dear Mrs. Yollis and Class,

    I learned that a parallelogram with four sides is a rhombus. I also thought that your videos were creative and interesting.

    Lexi a 49'er

  5. Hello Mrs Yollis and class,

    Your instructional videos are amazing. I've always found one of the best ways to learn is to teach. We have to think carefully what we say so we may pass on the correct information. Well done, everyone. :)

    Teacher, NSW, Australia


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