The Sun appears in art, on flags, in songs, in poetry. Sun symbols are
perhaps the most common images in every culture.

http://www.windows.umich.edu
The ever-useful "Windows to the Universe" site: mythical connections to the Sun, with three content levels (beginner, intermediate and advanced) for every link.

http://www.civilization.ca/membrs/civiliz/egypt/egcrgr1e.html
Information about the Egyptian sun god, Ra.

http://hyperion.advanced.org/15215/index_2.html
"The Sun: Man's Friend & Foe"]

http://hyperion.advanced.org/15215/sun_spot.html
"The Sun Spot" is part of "ThinkQuest". The first site is for teachers and older students. The second site is for students in grades 4-6.

http://observe.ivv.nasa.gov/nasa/exhibits/sun/sun_4.html
NASA's Observatorium: What the Ancients Thought About the Sun