Warren elementaries

Open Educational Resources is a free-source collection of lesson ideas and resources.  It also includes classroom management and other topics.

Reading/Writing Workshop chat archives (uses #rwworkshop hashtag first Wednesday of the month

Enter your spelling list and practice your words with 8 different games. (Also has predetermined lists)

As with many sites, there is a free version, but more features with paid subscriptions.  You can input your own spelling list.

Warren currently has subscriptions for students 1-6

Great website that is very specific about content of various things, yet also gives helpful tips in many areas for educators, students, and families.

Make free flip books

Extensive list of resources and examples for Voicethread

There are some suggestions in the comments as well (including AASL's recommended sites)

Great list of sites for students to publish on the web

This page details the resources Laura Candler sells about lit circles, but it is part of an even bigger, wonderful site that has many free resources.  The lit circle pack is probably well-worth buying!

Note that this list is from 2009, so some links might be obsolete.

This 57-page PDF is a scholarly study which reviews the literature on text organization and how it affects reading comprehension. One item discussed is the use of graphic organizers in helping students of different abilities better understand reading material. (Rec by Amy Lorch via LC)

Use these sample paragraph frames for each type of text structure used in expository writing. (rec. by Amy Lorch via LC)

This two-page PDF provides a resource for the different text structures for expository writing. It includes definition, signal worlds, graphic organizers, summary questions and paragraph frames for each text structure.

This one-page PDF contains signal questions and signal words for the various text structures. (from Amy Lorch via LC)

Use these graphic organizers to help students understand the different text structures for expository writing. (through LC via Amy Lorch)

Use these paragraphs as examples of various text structures.

Use the circle plot diagram as a postreading organizer to explore the text structures in a book.

This site has lots of hilarious poetry.  There are silly poems, gross poems, and even fill in the blank poems.  Be sure to rate the poems you've read on the Giggle Meter!