K-W-L in its own right is one of those nifty practical ideas
that teachers can pick up quickly and start using the
following morning, probably explaining why it became so
popular. But, like other teaching strategies that are
deceptively radical in their implications, K-W-L is also
easily corrupted -- and often implemented so poorly as to
undermine any meaningful benefit.
Why do I say that K-W-L, used properly, is actually radical?