Easy Boolean

Boolify helps students bridge that gap by visualizing the process and letting students interact with the abstract concept behind the search process in a tangible and hands-on way. Boolify helps people visualize the logic behind their searches. Understanding how the logic works improves people’s ability to effectively search.

ookaboo: free pictures of everything on earth

Unlike some other free pictures sites, images in Ookaboo are public domain or creative commons and can be used freely for blogs, web sites, schoolwork, publications, and other creative projects.Find out more!

Scribble Maps

Easily draw on maps and then share them with friends, completely for Free! Simple enough to be used by children, but powerful enough to be used by GIS professionals - Scribble Maps is the easiest way to draw and share maps with friends.

QR Codes

When decoding the image with some QR code readers, you will see the URL. Which is fun, right?
qrcode POOH.jpg Scan this QR code with your cell phone.
Besides URLs, you can also turn text, phone numbers, maps and many other information types into QR codes, which can be easily shared with others who can decode with their camera phones. So, how to create a QR code? You can check out the following top 10 free online QR code generators

Glogster: Online Posters

Check out the original version here