One of them is Trisila Surabaya Junior High School. It always participates in Mathematics house, with send 20 students to take part in this activity. they looks enthusiastic every this activity is held. they have been followed this activity for 3 times. for the first, in Kenjeran sub - district office. Second, in Youth Hall building. And recently was held in Kenjeran sub - district office again. This activity usually held after school hour, for about 3 to 5 p.m.
Some documentations of the activity: