Interactive, online tool in which students can create webs for a variety of reasons such as brainstorming, essay writing, reading comprehension, etc. I just used it to create a 'To-Do' list, can be utilized effectively for a variety of things.
This site gives a great over view of some DI lesson plan tools. RAFTS, tic tac boards. How to create them and differentiate for your subject and class.
Although, your school or district must set up the service for you, it is free, simply needs an inquiry from an official. I was able to register through my methods district (Pembroke Academy) and believe it's a great tool for teachers to utilize. I can demo the software in class if time, and Bill allows.
This is a great website, with lots and lots of links to fantastic educational websites all around the world wide web. You click on a topic, and it provides a list of websites that have information about that topic.
This site is a tool to generate free graph paper of a variety of sizes and styles. Perfect for when you need graph paper, but your supply closet is empty (as it will be, come June, or May, or even April.
This website lists some great Smart board apps for use in the classroom. I especially like the science apps, where there are hands-on simulations for students to manipulate.
Came across this as I was doing my action research. My school, and many others, uses NETS standards for their technology policy. Some resources for teachers and admin here.