Traditional books cannot be used in a Suggestopedic class since they fail to present the content and grammar following the function of the human brain. The way they present information is not according to the real way the human brain processes information. The whole book has to be adapted to be used in a Suggestopedic class. It is hard work but the final results are worth it.
There is a teacher who developed a whole teacher training course to apply and use Suggestopedia using traditional books. He teaches how to adapt and create a new Suggestopedic book to be used in Suggestopedic classes. The training also teaches the teachers how to conduct an intensive course in English or in any other foreign language using the newest development of Suggestopedia - Desuggestopedia.