"Microsoft Academic Search is a free academic search engine developed by Microsoft Research, which also serves as a test-bed for our object-level vertical search research. Microsoft Academic Search provides many innovative ways to explore scientific publications, authors, conferences, journals, organizations and keywords, connecting millions of scholars, students, librarians, and other users."
"Million Short started out as an experimental web search engine that allows you to filter and refine your search results set. The thinking was that web searches yield the same popular sites. Million Short makes it easy to discover sites that just don't make it to the top of the search engine results for whatever reason - whether it be poor SEO, new site, small marketing budget, or competitive keywords. The Million Short technology gives users access to the wealth of untapped information on the web."
A "computational search engine" that can solve mathematical problems, convert numbers, and perform other interesting calculations. Read more about it in Thrall's Science and Technology blog.
"Looking for great websites for kids? Our editors have made it easy with these hand-picked lists of fun, age-appropriate kids' sites and online games. It's a big world on the web, but with lists like ours, it can be a worthwhile one for your kids."
Activities for math, language, science, history and the arts. Aimed at grades 2 through 12. Topics include the Renaissance, Middle Ages, spelling, volcanoes, metrics, geometry, garbage and more. From the Annenberg Foundation.
In addition to this Ready Reference guide, which you are viewing right now, we maintain a variety of resource guides covering more subjects yet. You may browse or search our guides. Also check out our databases and blogs.