Mandalas are an art form made by pretty much every culture. I like to integrate mandalas alongside sacred geometry into middle (and even high school) curriculum, as the Social Studies standards almost always highlight societies, cultures, and/or religions that feature mandalas and sacred geometry (Buddhism, Hinduism, medieval Christianity, and Islam).
Here is one of the ways in which I teach mandalas and sacred geometry. Note, a mandala does not have to exhibit sacred geometry in order to be a mandala. A mandala is any image contained within a circle.
And, here is an accompanying presentation:
Finally, here are some examples of my middle-school students’ works: