This is the first in a series of very short videos showing a child using loose parts to make his own construction. As the video starts, the child is placing a clear plastic tube inside a cardboard tube. You can hear the plastic tube bounce when he drops it into the cardboard tube. He reaches down with his left hand to the bottom of the tubes so he can pick both tubes up at once. He has a plan. He wants to stand the two tubes in a plastic measuring cup on the floor. (Since he seemed to have this plan, he must have been working with the tube and measuring cup for a least a little while before I came along.) With his left hand holding the bottom of the two tubes and the cardboard tube resting on his shoulder, he uses his right hand to set the plastic cup upright. He begins to place the tubes into the measuring cup. He seamlessly slides his right hand to the top of the cardboard tube to help steady and direct the tubes into the cup. He lets go with his left hand and the tubes are in the measuring cup. He looks inside the cardboard tube all the while holding it steady with his right hand. It looks like he wants the tubes to stand in measuring cup. At this point he could have let go to see if it would stand, but he doesn't. Instead he eases his support of the tube with his right hand. He feels it begin to tilt. You can see his left hand is positioned to catch the tube if it falls. He tries to reposition the tube in the measuring cup in an attempt to change the balance so the tubes will stand up by themselves. He lets go with the right hand on top, but brings both his hands up so they are around the top of the cardboard tube but barely touching the tube. In fact, he plays at letting go of his support totally. He knows intuitively at this point that it is unstable. He grabs the top of the cardboard tube with his left hand and reaches over to the shelf with his right hand to nab another plastic measuring cup. In short order, he fits the second plastic cup over the cardboard tube. In a leap of faith, he lets go with both hands. The structure he has built wobbles for a second and then topples. You can hear his sigh of frustration.