On February 24, 2015 "Tkuma" Institute organized and conducted seminar for History teachers of Lviv regions "Ukrainian Dimension and Relevance of Historical Material in Modern Textbooks". The seminar was conducted within the framework of joint project of "Tkuma" Institute and Yad Vashem "Studying the World War II and the Holocaust History for Tolerant Society Formation". During the event teachers discussed new textbook by Igor Shchupak on Middle Ages History for the pupils of the 7th form and multimedia e-book "World History. World War II and the Holocaust".