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!)
Photos of our last school trip to England in March 2018 in the English section (password!)