Teacher Tools 
AskEric - This educational site includes a question and answer service, the askERIC Virtual Library and many other related reference areas.
Busy Teachers' WebSite K-12 - Many links appropriate for kids arranged by subject area. Includes a Teachers' Reference Section.
Education World - A terrific searchable site for curriculum and lesson planning ideas. Site reviews are especially helpful!
Student Research Resources - A collection of webquests and lesson plans appropriate for 4th and 5th grade students.
Franklin Institute Educational Hotlists - Great sites to explore and learn in many curriculum areas.
Global Schoolhouse - An excellent site with links for students, teachers and parents.
Great Sites for Great Kids - These links are particularly appropriate for middle elementary students.
Health World Online - A great resource for topics involving health and wellness.
Integrating the Internet - Use this page to find primary resources, projects, a weekly newsletter, units of study, and a tutorial to help you plan projects and class homepages.
Kathy Schrock's Guide for Educators - A huge, subject organized and frequently updated guide of internet links for teachers and students.
Teachersfirst -  Quality collection of teacher, child and site Resources
PBS TeacherSource - PBS related resources, articles and links for teachers.
WebQuest Page - Find out how to create and see samples of webquests - currently defined as inquiry-oriented activities in which most or all of the information used by learners is drawn from the web.