In addition to these three must-see classroom websites  maintained by other teachers, be sure to check out the following. 

Mrs. Meacham: This 1st grade teacher calls her website "Classroom Snapshots." The homepage is an alphabetical index that includes a variety of resources like unit plans for all subject areas, virtual classroom tours from current and previous years, tons of SMART Board files, useful printables, and much more. If you are a K–2 teacher, this website is worth your time.

Mrs. Gold: This 3rd grade teacher maintains a great classroom website with lots of teacher resources and a very comprehensive "Outstanding Classroom Website" list organized by grade level.

Victoria Jasztal: This former Scholastic online mentor also has an awesome classroom website. She has tons of resources for Reading and Writing Workshop, as well as math investigations and much more. She also provides another fantastic list of classroom websites.