"the most comprehensive scientific research tool on the web. With over 370 million scientific items indexed at last count, it allows researchers to search for not only journal content but also scientists' homepages, courseware, pre-print server material, patents and institutional repository and website information. "
from the University of Missouri - "eThemes is your source for content-rich, kid-safe online resources that will help enhance your teaching and save you time. eThemes provides free, fast access to over 2,500 collections of websites, on topics ranging from Aerodynamics to Zebras and everything in between!
By researching and creating these resources for you, eThemes will save you the time that you used to spend wading through millions of hits on Google, trying to find a few websites that meet your teaching needs. We do the searching for you, giving you more time to improve your lesson plans and actual teach!"