These same artifacts of childlore, in innumerable variations, also continue to serve the same function of learning and practicing skills needed for growth. So bouncing and swinging rhythms and rhymes encourage development of balance and coordination in infants and children. Verbal rhymes like Peter Piper picked... serve to increase both the oral and aural acuity of children. Songs and chants, accessing a different part of the brain, are used to memorize series (Alphabet song). They also provide the necessary beat to complex physical rhythms and movements, be it hand-clapping, jump roping, or ball bouncing. Furthermore, many physical games are used to develop strength, coordination and endurance of the players. For some team games, negotiations about the rules can run on longer than the game itself as social skills are rehearsed. Even as we are just now uncovering the neuroscience that undergirds the developmental function of this childlore, the artifacts themselves have been in play for centuries.