Sites to find k-12 internet resources: 
artsedge
artsedge offers free, standards-based teaching materials for use in and out of the classroom, as well as professional development resources, student materials, and guidelines for arts-based instruction and assessment.
Blue web'n 
a searchable database of over 1000 outstanding internet learning sites categorized by subject area, audience, and type (lessons, activities, projects, resources, references, & tools). Blue web'n does not attempt to catalog all educational sites, only the most useful sites.
Eduhound 
an educational directory with built-in resource links offered free to educators, students and parents. Eduhound.com seeks to harness the vast information resources of the web, while enabling educators to use the internet as a classroom tool.
Kathy schrock's guide for educators 
a categorized list of sites found to be useful for enhancing curriculum and teacher professional growth.  Updated daily to include the best sites for teaching and learning.

Jewish education:
board of jewish education of greater new york
the mission of the bjeny is to motivate, strengthen and increase jewish identity and commitment to the jewish people through educational services and acculturation programs
the coalition for the advancement of jewish education - caje
committed to promoting excellence in the areas of judaic content, pedagogic skills and the culture of education.
Guide to selected jewish educational resources on the internet
links to a variety of educational resources
the jewish agency for israel
educational resources on everything from israel to festivals to current issues. Includes datajem, a searchable database of jewish educational resources.
Jskyway
online professional development for educators in jewish schools.
Lookstein center: the virtual resource center for jewish education
sponsored by bar ilan university, features a wide variety of educational resources and an email helpdesk.
Meltonarts (under construction 7/04)
a website dedicated to learning judaism through the arts. Presented by the melton coalition for creative interaction.  Lesson plans, units, artists in residence, links, etc.
Partnership for excellence in jewish education
a collaborative of jewish philanthropists who seek to create a vibrant and sustainable jewish future through strengthening the jewish day school movement in north america.

Improving computer skills: 
freeskills
offers online tutorials for major computer applications, including most microsoft office software, frontpage, adobe photoshop, and more.

Miscellaneous & web tools:
ala selection criteria 
"how to tell if you are looking at a great web site," selection criteria from the american library association.
Altavista's "babel fish"
provides several instant translations of english to spanish, spanish to english, russian to english, and many more.  Also provides translations of web sites!
Calendar server
create easily accessible classroom calendars with information for students and parents.
Catching digital cheaters
links to resources that are used for cheating, and to detect plagarism in student reports.
Epals classroom exchange 
epals is the world's largest online classroom.  Provides members with the collaborative tools, ideas and community needed to communicate worldwide. 
Filamentality
filamentality is a fill-in-the-blank interactive web site that guides you through picking a topic, searching the web, gathering good internet sites, and turning web resources into learning activities.
Mcgraw-hill learning network
free suite of tools such as a roster-maker, lesson planner, grade book, etc.
Personal education press
create flash cards, game boards (like bingo) and quizzes. Includes subject-specific word lists.
Puzzlemaker 
a puzzle generation tool for teachers, students and parents. Create and print customized word search, crossword and math puzzles using your word lists. Build your own maze or print specialty hand-drawn mazes created around holidays and classroom topics. 
Rubistar
create rubrics from templates, which may be edited and customized.