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Ypop: Using the Computer to Measure Sunspots
This site provides a tutorial on using computer image processing techniques to measure the size of sunspots and analyzing various phenomena visible in solar images. It also provides lesson plans for teachers to use in class.
Scholastic
Scholastic Instructor: Sun Sational Science
Discover more about the sun when you visit this educational resource. The content of this site includes solar fun facts, experiments, and activities.