(En inglés)
Early Numbers 8 to 18 Months: Math Learning Trajectories
Woman: One milk. Here's your milk and Cayden's milk. Valentine's milk. What shape is your cereal? See your cereal? What shape is that? Cayden, you see your cereal? You see what shape that is? What shape is that?
Cayden: Square.
Woman: The square? You said the square? Poking your watermelon?
Cayden: [Inaudible]
Woman: You did it? What did you do? You put your spoon inside your watermelon?
Cayden: Yeah.
Woman: Yeah? You know what shape your watermelon is?
Cayden: Uh...rectangle.
Woman: It's a rectangle.
Cayden: [Speaks indistinctly]
Woman: Huh? It came out?
Cayden: Yeah. Carlo.
Woman: Carlo? No, I don't think Carlo wants to eat yet. You want to eat your watermelon? It's good.
Cayden: Don't wanna.
Woman: Okay. You don't have to eat it. Want to put it back inside your plate so you can eat your cereal? You want to eat it now? You got to bite it. Bite it with your teeth.
Boy: More.
Woman: More what? More what? Say, "More watermelon, please."
Boy: More watermelon, please.
Woman: Okay. Try to use the scoop. Great. You had three pieces of watermelon. That's your third piece of watermelon.
Casi al final de este video, el niño de la camisa azul dice la palabra "más" y la maestra le pide que explique lo que quiere decir. Este comportamiento refleja la meta IT-C 8 para los niños de 8 a 18 meses, quienes utilizan algunas palabras básicas para referirse a un cambio en el número de objetos (video en inglés).