yaroshova - secondary school number one in the town named after bogramyan and history teacher viktor alekseevich blackr veronika aleksandrovna dubovskaya. artyom vlasenko, elskaya regional gymnasium, deputy director for educational work at klyuchinskaya. gesgalovskaya secondary school deputy irina nikolaevna shumskaya. danilo rabbimov - educational director and history teacher , secondary school number 210 in minsk , primary school teacher elena nikolaevna tumanova. daniil vaitikhovsky, gymnasium number 39 in minsk. nikolai khalamov, mogilev state regional lyceum no. 3 and teacher-psychologist. i just have one more person to introduce, this is our scientific expert ekaterina duko. head of the department of methodological support for mathematical and natural science education of the academy of education. in case of controversial situations, it is she who will decide whose side is right. hello guys, i wish you a good mood today, interesting questions and quick, accurate answers to all participants. good luck! good afternoon, guys, we are glad to welcome you here on our playground, right now, in the teac