I've had a good experience introducing DrRacket to early-elementary-aged kids; it's much more approachable than anything in Clojure-land.
Of course, for pre-typists you can't beat Scratch: http://scratch.mit.edu
I hope that something in Clojure can be made to be as effective as DrRacket has been for you.
If you really want just typing, there are a few LOGO implementation in browser, see http://logo.twentygototen.org/ http://www.calormen.com/jslogo/
if you want to use iPython, have you looked at http://mail.scipy.org/pipermail/ipython-dev/2014-April/01372... ?
ucbLogo https://www.cs.berkeley.edu/~bh/logo.html
or FMS Logo http://fmslogo.sourceforge.net/
...no IDE, but there is a REPL. As for resources you might like to investigate: