Create crossword puzzles.

Science 360 is an educational video site hosted by the National Science Foundation. Visitors to Science 360 can search for videos according to topic. Science 360 also gives you the option to browse for videos according to series. Some of the series that visitors will find on Science 360 include climate change, sustainability, engineering, and the science of sports.

BigHugeLabs provides a great way to make posters and trading cards easily. Best of all, using the free education-specific login students won't see any advertisements. It's good for younger kids or an older kid who wants to put together a presentation fairly quickly.

The Noun Project is making clip art icons for every known noun making it a perfect place to look for the images needed for a precise infographic. It can take a lot of time to find a perfect image of a cracked cell phone or a specific kind of dog and the Noun Project makes that a little easier.

Padlet used to be called Wallwisher, but it got a makeover and a name change recently. It's essentially a virtual board with sticky notes that can be easily moved, shared and embedded. There are several views, including something that looks more like a scrollable blog and it's easy to both personalize the experience and organize notes. The privacy and moderation settings make it easy for students to become members of a board where a teacher can post resources and encourage them to do the same.

This is a collection of math tutorial videos.

Opus is a new service that aims to help middle school mathematics teachers discover sample math problems aligned to Common Core standards. To find problems on Opus search by entering a topic and selecting a grade. You can also find problems by clicking the "browse the Core directly" link on the Opus homepage. Either way when you find a problem you can save it to your free Opus account where you can then generate a Word doc or Google Document of all of your saved problems. You can also create an answer sheet in your Opus account.

"A web whiteboard for schools. Create a sketch, share it with students. They mark up their own and share it back. No plugin, installation or app required! Works on all modern computers, smartphones and tablets! "