That said it, is the stereotype circus science that seems to always be the "gateway thought" (sort of like marijuana being thought of as the gateway drug (when in my opinion it is alcohol (or caffeine))). It is important however for us in Science to remember that there has to be something that grabs children and makes them re-think becoming a fireman as a career. In chemistry it is the inevitable "Magic Show" (shudder) with faux wizards, bangs and flashes that seem to get that first response. In a horrible way it would be like a model for Christianity where you would use televangelists to do children outreach. In fact, I do a school outreach presentation entitled "Not a Magic Show" where I do the regular stuff but underpinning it all is a grade appropriate explanation for what the students are seeing. I even have a logo.
But still ...
I think XKCD caught a shadow of this idea in their most recent strip (as a disclaimer I will note that XKCD is an "adult" webcomic that explores modern life from a engineering / science perspective and veers sometimes into NSFW).
Click on image to embiggen
I guess what I am trying to say is that sometimes the complete mis-understanding of what Science actually is may be our best way of promoting it to children. But then again that is a model that works for religion, politics and relationships. Does all of life have to be the Dance of the Seven Veils?