Not a new tool - but a refresher of the resources and content on the website. Provides educators/students resources including lesson plans and examples of student work. Many of the examples are for reading/language arts, but can easily be adopted for other subject areas (all grade levels).
ReadWriteThink offers interactive tools - these could be a great option for when students need to create their own games / review activities. 59 Tools (14 currently can be saved/shared - currently trying to make more of them saveable). ReadWriteThink is working on an app for iOS (currently heavily Flash driven)
I don't know how I missed this website before. Yet another go-to site for free, helpful online resources to enhance classroom teaching. The website creator won the ISTE's Young Educator of the year award. That is not a surprise after checking out the site. Some future discoveries will probably be related to playing around on this site.