As does much else in the universe, edu-cation moves in cycles. The 1960s and 1970s saw a swell of interest in teaching styles that were less authoritarian and hierarchical than the traditional watching of a teacher scribbling on a blackboard. Today, tastes have swung back, and it is fashionable to denigrate those alternatives as so much hippy nonsense.rnBut evidence trumps fashion-at least, it ought to.
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