How to teach children English without actually learning it?

I came across these wonderful blogposts by Ms Marisa Constandinides.
Being an experienced teacher and teacher trainer herself, she expresses her concerns about Foreign language teaching and how teachers actually teach.
The most common "mistake" is that parents prefer buying the "book", that their children do lots and lots of grammar excersises but this does not guarantee that their children will actually communicate in the foreign language.
Here are the links (in Greek)
Πως να διδάσκετε αγγλικά χωρίς να μαθαίνουν οι μαθητές σας (parts 1, 2, 3)
http://celt-athens-tefl-courses.blogspot.com/2009/11/blog-post.html
http://celt-athens-tefl-courses.blogspot.com/2008/10/blog-post.html
http://celt-athens-tefl-courses.blogspot.com/2010/06/3.html