1. The metallurgists of Krivoy Rog (metallurgical plant: the process of smelting pig-iron, the production of steel). 2. "Insects at the microphone" (struggle against insects-pests of a crop of grain crops). 3. ACS and transport (exhibition "ASU-technology 74" at VDNH: novelties in the management system of urban public transport). 4. "How to measure a vortex?" (Moscow Institute of Physics and Technology: application of a laser in the study of turbulence).