Educreations Whiteboard: Educreations is a unique interactive whiteboard and screencasting tool that's simple, powerful, and fun to use. Annotate, animate, and narrate nearly any type of content as you explain any concept. Teachers can create short instructional videos and share them instantly with students, or ask students to show what they know and help friends learn something new

NSF Science Zone: Featuring hundreds of exciting videos and high-resolution photos from a dozen areas of science, you can spend hours absorbed in discoveries that take you from the depths of space, to the wonders of the unimaginably small, to the far corners of our own planet. All brought to you by the National Science Foundation.

Calculate84: TI 84 Graphing Calculator for your iPhone or iPad- free for now!

Mad Libs: If you have a dead moment in class or are an English language teacher, you should definitely try this app out. Project your screen and play this word game with your students.