[CO leaves; JO, KI, and NI play together for awhile; cannot hear very well, since they talk very quietly; JO and KI go over to the first marble track and do it together; they do all their marbles at once; after they all go through the track, JO looks at KI and then starts jumping up and down and laughing; KI starts jumping up and down too; as she jumps, she starts to turn around simultaneously; JO starts to copy her]