Just adding light, soil and air to water is not sufficient to produce sugar like plants even by stirring the solution. A second focus of the explanations was about the characteristics of the air in the atmosphere. While plants need carbon dioxide, human beings breathe oxygen. In our presentation we used helium and sulfor hexa fluoride for demonstrating the different physical properties of gases.

The group returning from the REM laboratory. The children could use this high power microscope to explore the detailed shape of small insects.