I love this image.  It doesn't represent the teacher as a sage on the stage or a guide on the side.  This shows them how they really should be... a meddler in the middle.  

Image credit: http://usergeneratededucation.wordpress.com/2014/10/08/the-mindset-of-the-maker-educator/?crlt.pid=camp.N3RNnSyiRUqO