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Dominic Cinaglia gets a close look at the object that he is trying to draw a side view of for his team member to try and recognize. (Photo by: Christopher Reeves/Park Record)

Matthew Peters uses a power drill during the construction of his catapult to create a slot for a piece of wood to stand in . (Photo by: Christopher Reeves/Park Record)

Zachary Mazzie (left) digs for Legos as he tries to replicate the structure made by Matthew Peters who is giving an in depth description of the one he made. (Photo by: Christopher Reeves/Park Record)

Nathan Ford (right) tries to give an in depth description of the structure he made out of Legos for Parker Booth to try and replicate. (Photo by: Christopher Reeves/Park Record)

Matthew Peters and Zachary Mazzie discuss the materials that would work best for the catapult that they are working on together. (Photo by: Christopher Reeves/Park Record)

Zachary Mazzie ties a rubber band to a vice for a quick release of the catapult arm to launch a marshmallow. (Photo by: Christopher Reeves/Park Record)

Parker Booth lets go of the weighted arm to launch a marshmallow from the catapult that he constructed with another group member. (Photo by: Christopher Reeves/Park Record)