<http://schema.org/image>
<http://static1.squarespace.com/static/50b88908e4b012760ada1011/t/559c6a37e4b0b5cbd2bc1a64/1473996063557/>
<http://www.edgalaxy.com/journal/2013/8/14/pinterest-really-hits-the-spot-for-teachers>