curry.edschool.virginia.edu/go/frog/ is an even better site for teaching the skills and procedures needed for students to successfully dissect frogs. This site offers step by step instruction, movie clips of real frog dissection, and even procedural "tests" to be sure that the kids know everything before they have a real frog in front of them.
www.accesseric.org is the site to go to when you are searching for educational journal articles. You will still need to stop by the library in most cases, but it is a great way to start researching from home.
www.gutenberg.net and etext.virginia.edu both have tons of books, stories, poetry, etc. available electronically, and it's okay to print them out for students!
www.toinspire.com has great quotations to use in your classroom.
www.edweek.org/edhome.htm
nces.ed.gov
www.studyweb.com
www.lightspan.com
www.mccallie.org/curriculum/summer/7th.htm
www.monterey.k12.ca.us/~snlornzo/links/lalinks.html
Click here for sites for Watsons