Class 7c is a class from Freiber vom Stein school in Frankfurt-Sochsenhausen, in the greatest part of Frankfurt, Main. Many students though come to the school from other parts of the city. Some of them need half an hour or more to reach the school. We use public transport, since we live in Frankfurt. Many boys and girls are Eintracht Frankfurt's funs and follow the team to its return to the first division. During our leisure time we play sports and meet our friends whenever we have the time to the big and beautiful center of Frankfurt. We participate in this European program because of our physics and mathematics teacher, who suggested this program to us. We could not reject this offer when we learned that the meassures obtained from our (meteorological) observations as well as the interviews will take place at the same time in other schools also. We became very curious. Through this program more work groups were created.
Representing the whole 7c, Andreas, Claudi, Christian

Along with 10d class, to which I am the teacher responsible for physics and mathematics, we installed (built) a measurement station. Later it seemed that the most difficult thing was to calculate the amount of rainfall, since an instrument for measuring this is not easy to buy from a store. Giving it some thought we understood that we needed a funnel to enlarge as much as we could the area on which the rain was falling. To keep evaporation to a low level we needed a bottle with a very thin neck. To have acurate meassures we had to specify the containing of the bottle with a volumetric cylinder.
More discussion was made about 2 problems:
-Will the results of our measurements be affected by rain falling in a diagonal direction? (Effect of the wind.)
It came out that the measurements are not affected.
-How can someone calculate the rainfall, when it is actually snowfall?
Two suggestions were made about this:
e.g. to gother the snow in a basin and melt it. But because of the unusually hot winter, we did not face this problem.
Much easier seem to be of course measurements with instruments that have been bought. The barometer is calibrated and then meassurements can be taken. This was a success and a test was made even for a low atmospheric pressure. In the beginning, in April, we observed that very often it showed the value 1007 mbars, but never more than that. Trying to calibrate the barometer again, we found out that it could not show higher values of pressure. So we needed a new one.
Meassuring the temperature is not a problem of course. With little money one can find instruments with lower minima and higher maxima and an outside sensor. This sensor can be installed to a place sheltered from the wind and so one can see how cold it is outside. It is strange that when one takes the temperature in April at 13:00 it reaches 20o Celsius, while the highest temperature of the noon is 30o Celsius. The reason for this is quite simple. Our sensor was located in the shadow while the measurements from 8:00 to 13:00 hours were taken, whereas, while we were following our classes, the sun was warming up its surface. This does not cause a burn because of the sun, but a rise in the temperature. Meanwhile we tried to find some shadowy places.