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Earlier this week, Google introduced Knowledge Graph, the company's new search technology that understands "things not strings" and adds rich and relevant details about your query in the sidebar of your search results. Here are five great things you can now do with a quick Google search.

"This roundup aims to enlighten those new to the iPad, and guide old hands to a few new tricks - the heading might be laced with hyperbole, but you're going to have a look anyway… For those of you who are super-confident about your iPad knowledge, I'd like to propose a challenge. Go through and see how many features and shortcuts you didn't know about, leave a comment with the number at the bottom of the post - and be honest!"

AR SPOT is an augmented-reality authoring environment for children. An extension of MIT's Scratch project, this environment allows children to create experiences that mix real and virtual elements. Children can display virtual objects on a real-world scene observed through a video camera, and they can control the virtual world through interactions between physical objects. This project aims to expand the range of creative experiences for young authors, by presenting AR technology in ways appropriate for this audience. In this process, we investigate how young children conceptualize augmented reality experiences, and shape the authoring environment according to this knowledge.

You may have heard of Wolfram Alpha, which is a "computational knowledge engine." That makes it sound a bit scary, but it's a great tool once you can wrap your head around it. Apple's Siri uses Wolfram Alpha for 25% of its searches. You can leverage that magic and put Wolfram Alpha to work for you - the empty search box on its homepage holds endless possibilities.

"Here, you'll find links to other great SketchUp resources to help take your SketchUp knowledge and skills to the next level:"

Photography as both a profession and a hobby is an incredibly expansive topic that covers a remarkably vast range of subjects from science and art. No matter where you lie on the professional spectrum, there is simply always more to learn. We spent countless hours scouring the web for the best content we could find and share with you, and today we'll help you expand your knowledge with 100 photography related tutorials!

" Creating customized magzine on Themeefy is simple! All you have to do is : Research web sites and add interesting links directly from the Web. Pull in interesting social content from Twitter and Facebook. Upload photos, jot down notes and add a personal touch to your magazine. Customize the Theme magazine, publish it and share it with your peers and colleagues! Isn't that a cool way to share your knowledge with your social networks?"

The key goals of The Commons on Flickr are to firstly show you hidden treasures in the world's public photography archives, and secondly to show how your input and knowledge can help make these collections even richer."

"A continually improving collection of questions and answers created, edited, and organized by everyone who uses it."

"Enter your question or calculation and Wolfram|Alpha uses its built-in algorithms and a growing collection of data to compute the answer. "