I posted this because I mentioned Roy G. Biv in my previous post about creating rainbows and shamrocks. This is from Here Comes Science a great DVD/CD by musical group They Might Be Giants. It is a great Science resource for kids and it was nominated for a Grammy!
My daughter created a beautiful rainbow and we talked about this video while making it! We first made shamrocks by creating 3 circles and attaching a stem. As you can see, they were filled in with green. I set out the markers in rainbow order which made it easier for her to follow the color spectrum.
RED ORANGE YELLOW GREEN BLUE INDIGO VIOLET
Here is the wonderful rainbow and shamrocks by my daughter:
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