[cicatriz]

The headline is misleading, but the article itself is more solid in this regard.

In fact, if you want children to be able to think, you shouldn't "teach them to think". You should teach deep knowledge and skills in a particular subject matter context:

"Maths classes tend to be more sophisticated, with lessons that show the often fascinating ways that geometry, trigonometry and calculus work together in the real world. Students forego calculators, having learned how to manipulate numbers in their heads."

High expectations can also be effective:

"Yet his most effective change was also his wooliest: he expected the best work from all of his pupils."

See http://www.aft.org/pdfs/americaneducator/summer2007/Crit_Thi...