Useful Links:

SSEC Real-Time Imagery and Data
Provides access to real-time and archive weather and satellite data including Antarctica / Polar, Field Experiments, and Environment.
CIMSS Satellite Blog
This blog features interesting satellite images relevant to current weather events worldwide, often focused on imagery over the Upper Midwest and Great Lakes Region and always accompanied by detailed explanations.
Weather Wise (WXWISE)
Contains many highly interactive teaching & training web applets that you can use in class - with or without the descriptive information.
NOAA Environmental Satellite, Data, and Information Service (NESDIS)
NOAA's environmental satellites provide data from space to monitor the Earth to analyze the coastal waters, relay life-saving emergency beacons, and track tropical storms and hurricanes.
NASA's Earth Observatory
Share with the public the images, stories, and discoveries about climate and the environment that emerge from NASA research, including its satellite missions, in-the-field research, and climate models.
Satellite Timeline
An interactive timeline of satellite meteorology spanning more than 50 years (Sputnik to GOES-R) complied by the UW-Madison Schwerdtfeger Library.