Bogdan Kajak was born on 4th September 1922 in Warsaw. His parents were Maria Kajak, née Szatkowska, and Wacław Kajak….
Daily life of young Varsovians during the interwar period in the capital of our country was filled with youthful, carefree…
Based on letters between Bogdan and his friends Ewa and Janka we can find out how young people were spending their free…
Nowadays, in the era of the Internet when we communicate by messenger, snapchat, mails and other social media, the habit of writing letters is becoming less popular. However the…
Cultural activities were really important for teenagers. They used to go to the…
Warsaw before World War II was called ‘Paris of the East’. In this beautiful city Bogdan Kajak lived. Looking at all of…
The main task at this time was reforming education. After regaining independence, the first act of law aimed at introducing compulsory free schooling for children aged 7-14. Many new higher education institutions were established: the Catholic University of…
Nowadays in biology, the bone is characterised as tissue consisting of bone cells, protein fibres and mineral matter. In his notebook Bogdan Kajak described a…
Bogdan Kajak in his notes from Physics and Astronomy described the solar system. A lot of information written before…
Based on a comparison of the description of South America in Bogdan’s notebook and modern students’ notes we observed that similar topics are covered. However, there are large differences regarding the amount of imparted knowledge. Nowadays the description of the continent is divided among…
Having analysed the materials of only one student from 1937-1938, we…
During secret lessons, Polish children and youth were using single copies of textbooks that were usually owned by the teacher….
After the aggression of the Third Reich and the USSR in Poland in 1939, the Germans conducted a…
The Second World War had an impact on every Pole’s life. The founding of the Polish Underground State (Polskie Państwo Podziemne), which included civil…
