Super Teacher Worksheets is one of my favorite resources for educators. This is a great place for teachers to find all sorts of resources such as: printables, worksheets, puzzles, and more. Also, there is a innovative puzzle & math generator to create your own worksheets from scratch. Finally, a user can also search for common core aligned worksheets and even smart board resources too.
Flowboard is a wonderful free iPad app for creating stunning presentations. This is done through a very easy to use touch drag-n-drop interface for adding images, text, video, and more. There is even a nice selection of templates for users to create stunning interactive presentations. Best of all, a user can share their presentations via a unique URL or embed them into a site/blog. 
SpellingCity is a site I've mentioned before that is absolutely fantastic for all a teacher's vocabulary and spelling needs. This is a great safe site to use for students where educators can create their own word lists and then import them into educational games to reinforce learning. Also, SC has a free mobile iOS/Android app that integrates seamlessly w/ the website for mobile learning.
30hands is a wonderful free iOS app that is ideal for digital storytelling and mobile learning. This is a very user friendly drag-n-drop app that allows students to create digital stories by importing photos from their iPhoto library. Best of all, a user can add narration to a slide by recording their voice. Finally, a finished story can then be published to their iPhoto library or shared to the 30hands Collaborative Learning Community. There is even a very simple to follow walk-through that shows how to create your first story.
