Motherlode: Click here for a FULL FOLDER of resources on the Sun (including beautiful powerpoint lessons, movies and a complete, 108 page curriculum from the Solar Dynamics Observatory (NASA)
Below, I have links to sites and a lesson plan on charting sunspots with real SOHO data.
Discover Magazine's blog: Bad Astronomy
--Curious about the Mars lander Curiosity? It's landing soon! Take a look here.
Solar and Heliospheric Observatory http://sohowww.nascom.nasa.gov/--What we looked at: click on Gallery in the tabs and then MOVIES in the left hand frame to see tons of cools movies and animations of SOHO observations. Very cool.
Lesson: "Tracking Sunspots Using Real Data from SOHO" (PDF)