Does this title sound like one of those conservatives who thinks we ought to lecture? It's not. The critique is from ... something more like the far left. Left of Paulo Freire?! Yep. But left is probably the wrong word for it...
The False Promises of Constructivist Theories of Learning: A Global and Ecological Critique, by C.A. Bowers, is part of a series called Complicated Conversation.
Here's a bit from the introduction:
At $27, I'm not sure I can afford it, but Friere has been one of my heroes, and I'm intrigued by this critique. Some of the other books in the series look interesting also. Hmm, I wonder if UC Berkeley's library will have it. [Added on 7-16: As pointed out in the comments, you can read C.A. Bowers shorter articles online at his website; this article [pdf] seems to cover some of the same ground this book does. I just communicated with the author by email, and he's involved with Eco-Justice Press. They've published some books on similar issues; you can get the ebooks for $11.]