Students and teachers of School 155 had one more joint online Chemistry lesson together with teachers and students of St. Elias College, Malta. The lesson was jointly taught by the Ukrainian teacher Mrs Kateryna Popkova and the Malteze teacher Mrs Jozeppa Bezzina. The teachers have jointly prepared teaching materials and academic tasks for the students. The teachers synchronized their lesson. Mrs Bezzina demonstrated the experiment on the lesson theme. Team teaching and students' cooperation were just some of the lesson's outcomes.