On Thursday afternoon all the 5th grade classes went to mr. Vince's classroom. We all went there because, mr. Vince was showing everyone the Trebuchet simulator on his computer. There was two different simulator that we could choose from(the treb challenge and the trebuchet simulator). The Trebuchet simulator was a trebuchet on the computer, and you could customize the trebuchet to make it go farther. After we looked at the simulator we found out we were going to do it for homework. Then on friday, in morning meeting we talked about the simulator.