As you know, teachers know everything. But there are some mere mortals out there who still need to ask questions. This is a fabulous site with over 80 specialist areas to ask questions to the cloud. The community will then help you find an answer. The areas include English and other languages, computing, maths, science, history and much more.
http://ictmagic.wikispaces.com/Cross+Curricular
The atoms around you have existed for billions of years -- and most originated in the flaming, gaseous core of a star. Dennis Wildfogel tells the captivating tale of these atoms' long journeys from the Big Bang to the molecules they form today.