The new versions can be downloaded here in English and German. The most important differences to the 5th are:
1) It is now suitable for self-learning with learning control questions and answer keys.
2) Videos and photos have been added to the texts. Chapter 5 is thus an even more vivid introduction to the tandem approach.
3) The evaluation of the 18 courses and projects so far and the opinions of the participants are included.
Free tutoring is still offered. (The provisional 4th version in French and Russian will also be available in the future).
If you would like to be informed of progress twice a year, please send name + institution + ‘PT Mailing’ to contact (at) tandemcity.info .