It really isn't that hard to learn to think scientifically — kids can do it. In a beautiful example of communicating science by doing it, students at Blackawton Primary School designed and executed an experiment in vision and learning by bees, and got it published in Biology Letters, which is making the paper available for free.
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You know what we need now? A professional journal of grade school science (down, Elsevier, down — we don't want you involved) that can get a network of schools and science teachers involved in putting more of these efforts together. Role models are important, and kids seeing that other kids are doing real science would be an incredibly powerful tool for bringing up a new generation of scientists.
http://scienceblogs.com/pharyngula/2010/12/8-10_year_old_children_can_be.phpEight-Year-Olds Publish Bee Study in Legit Scientific Journal
http://www.geekosystem.com/kids-bee-journal-article