The following information is a description of the Online Weather School from the site founders:
JetStream, the National Weather Service Online Weather
School, is a site is designed to help educators, emergency managers, or
anyone interested in learning about weather and weather safety.
The information contained in JetStream is arranged by subject;
beginning with global and large scale weather patterns followed by
lessons on air masses, wind patterns, cloud formations, thunderstorms,
lightning, hail, damaging winds, tornados, tropical storms, cyclones
and flooding. Interspersed in JetStream are “Learning Lessons” which
can be used to enhance the educational experience.
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This looks amazing. Some (most) of the info is a bit above my kids’ heads still, but I’m bookmarking this for future reference.
Also, I cant find the post now, but you mentioned Phun recently, right? And from there I found Crayon Physics, which is also awesome. We’ve been having a blast with the game (actually, just the demo) and I wanted to thank you!! :-)
Thanks for the tip on Crayon Physics, Wendy! It looks like great fun. Since it's not free, I won't highlight it on FreelyEducate.com, but if anyone is reading this and wondering about it, here's a link: http://www.crayonphysics.com/  They do offer a free demo.