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Crop Circles Discuss this eTheme.

These sites are about crop circles. Read general information about crop circles, including its history and different theories on how they are created, as well as a design aspect. Find out how to create crop circles using geometric knowledge and how to implement them on fields. Includes a photo gallery, lesson plans, and interactive reconstructions. There are also links to eThemes Resources on symmetry and circumference of geometry.


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Find out about different theories of how crop circles are created, locations and different patterns of the crop circles, and how to make the crop circles. NOTE: This site includes ads.
Here are a collection of crop circle photo library by Lucy Pringle. The collection is from 1990-2009. NOTE: This site contains ads.
A two-page PDF file shows how mathetical patterns are related to crop cirle. There is also a step-by-step illustration of how to reconstruct the crop circle using GeoGebra. Scroll down to a link to download a software.
This page shows a reconstruction of crop circle using interactive geometric compass and ruler. NOTE: A Java applet is required.
Find out what patterns of geometry are used to create each crop circle. NOTE: This site contains ads.
This page shows how to reconstruct crop cricles based on geomatry. Click on images on the right to see the reconstruction.
In this lesson plan, students will learn about geometric patterns and their relationship from circles.
Learn how to construct the basics in geometry. Choose the mathemeical basics from a menu on the right and then click on bar in the middle to see interactive step-by-step illustration. NOTE: A flash-plug-in is reqired to view this page.
The official site of England's leading crop art collective. There is a photo gallery of their work, how-to's, and documentation.
See this crop circle experiment that was conducted in 2002.
Read this article that connects the crop circle phenomenon and critical thinking.
These sites offer many examples of how symmetry works in a variety of shapes. Find out the difference between reflection and rotational symmetry. Includes interactive sites that let you draw symmetrical shapes and manipulate them. There is a link to an eThemes Resource on tessellations.
Learn how to calculate the circumference of a circle also known as a perimeter of a circle. Find out what radius and diameter are and how to find their values. There are links to eThemes resources on perimeter.

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