Lesson plans can be found in the section called Explorer, but they must be downloaded. The collection of articles is very fine, and you can search for a particular topic. I have printed many of these articles, and I think they would be an excellent print resource for any school library. WWW4teachers is SCR-TEC s newspaper. See the section called Teacher Testimonials.
Earlier articles are in the archives.
There are chatboards by grade level and by subject. I hang out on the Primary Chatboard. SCR-TEC mathematics materials must be downloaded. They include Bullfrog math and Dollar Daze. There are flashcards, matching games, or concentration games.