To examine further the quality of the water, students carried out biological experiments. 

Firstly, the students from our school (Greece) were trained to Biology experiments. Then in the meeting in Greece they trained the Spanish students.

They carried out the following experiments:

1. Firtsly, the students were trained in the use of the microscope.

2. Secondly, they were trained in  the growth of microorganisms.

3. Moreover, the carried out experiments to measure the quality of water from a river in the village of Fodele. Stereoscopes were used for the measurements.