Most of them are in English. However, some of them were written in German.
My most recent contributions are on randomization (2015), published in PLOS ONE (compact version, peer reviewed): http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0132102
and about "roads to consciousness" (2017), published in the Journal of Consciousness Exploration & Research: http://jcer.com/index.php/jcj/article/view/667/678
New page about the last lessons in summer 2017 with photos (get your password from me!)
Looking forward to our next school trip to England in March 2018 (password!)