Ana pressed a sponge using both of her hands until water came out. When she stopped pressing, it returned to its original shape., Ben tried to change the shape of a plastic ruler by making it curve. When he did the same to a thick book, it did not change shape at all., Carla held both ends of a rubber band and made it longer. She kept doing it until it suddenly broke., Dan used his hands to move a heavy box away from him. At first it did not move, but when he used more effort, it slowly moved forward., Ella held both ends of a wet cloth and turned them in opposite directions to remove water. The cloth became tighter., Finn held a rope and moved a bucket closer to his body. The bucket slowly moved toward him..

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