Today, 11^th March 2010 at about 11:30, we have had a new experience with Mr. Sponza and miss Beltramini. During the 4^th period of lesson, we went to the school garden to begin the first phase of the practical study experiment of an ecosystem. We are going to study a particular ecosystem: the lawn. The first phase foresaw the setting of  the traps, that have been set in a chess shape, respecting the distance given by Mr. Sponza. These traps consist in empty yogurt-jars or plastic glasses where we have put a solution of water and alcohol at 50%. Next week we expect to find in these traps insects that live in the ground. It's the first time we personally essay a data-gathering (the insects that we expect to find), that we will analyze and observe  referring to some classification keys or categories about (referring to) the similarities and the differences. We will choose the most opportune keys according to an observation about the insects found.