1) Young Red Navy men of Stalingrad are sailing on a steamer along the Volga, cleaning the deck, learning to transmit signals. 2) Workers of one of the Stalingrad factories are working in the workshop at the machines. 3) Children's railway in Tashkent: train dispatch; children perform the duties of the head of the station, the driver, the conductor. 4) Pulkovo Observatory. Installation of a solar telescope. Scientific observations of the solar disk. 5) Pioneer camp on Lake Onega: children ride a swing, pick flowers, listen to the game on a Karelian folk musical instrument. 6) The beginning of the school year in one of the Moscow schools. First graders and high school students in the classroom.