Useful tools for secondary teachers are sites that allow for more access to resources, videos,embedding tools, and printables. I enjoy using Edhelper.com which allows for the creation of content-based puzzles and printable worksheets. Unitedstreaming.com is also a website that provides access to SOL based videos and curriculum units. Though these two websites are not free, edhelper allow teachers to create minimal activities for free and unitedstreaming is often purchased by school districts who receive a site license. Last but not least, I recommend Zamzar.com, which allows teachers to embed YouTube or other videos into PowerPoint presentations that may otherwise be blocked by district internet screening tools.
This tool will allow you to create image and photo galleries of a variety of resources for class activities. It also has a very thorough and rich help/support feature.
This is a great website for ear training. One of the downsides is that it does have a cost to get the full benefit of the tool but anyone can sample the activities for free. Teachers can track student progress as well.
This is a great collaborative brainstorming tool that will allow all students to contribute, not just those who are willing to put their voice out there. If you like post-it notes, you'll love it!
-I'm using it as a brainstorming activity for my students to set up their class goals and "laws" for the class constitution in the first days of school. It's also private in that the students need to have the specific link in order to find the site. I would post that on blackboard.