Many thanks to Kevin Mears who shared this yesterday:
http://www.mearso.co.uk/doodles/being-open.html
Personally I am favouring the keyhole one (in 2nd set, last one) but would love to hear what others think. The idea of educators being the key and unlocking their work (technically owned by institution maybe?) so that others can access is a really empowering one imho.
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