EDUCATIONAL RESEARCH NOISE-PRODUCING DEVICE CONSTRUCTED FROM USELESS RECYCLABLE MATERIALS

摘要

The construction of experiment devices from useless and recyclable materials utilized throughout the conduction of an educational research has multiple educational targets inter alia the demystification of the technology and the professional orientation of pupils towards the applied sciences with a view of strengthening the technological development of the country. The herein presented device may be assembled with useless and recyclable materials and constitute an experimental device for the introduction of group of pupils to the basic principles of the applied research. For the mounting of the experiment device -except for useless materials {e.g. plastic caps-plugs (1,5,10,16,18) or plastic bottles from milk and refreshments (19), plasticyogurt containers (6,12)- there are also used non-expensive materials such as steel screws (2,3,4,8,9,11,13,14,15,17,20).