This is our first piece of green map drawed by the green map group of the second middle school of Dagang during the summer vacation in 2007. its theme is our school campus. At that time we have seven members, we are the sixth grade student s aged from 10 to 12. Under the guidance of teachers, we started to draw, we can’t remember how many times we modify, when we showed our works, all the audience think what we did is very meaningful. In which we reap a lot of joy, we won the third prize of Tianjin 23rd youth science and technology innovation contest.