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.
Near the end of this video, the boy in the blue shirt says the word, "more," and the teacher prompts him to elaborate on his request. This behavior reflects Goal IT-C 8 for children 8 to 18 months, who use a few basic words to refer to a change in the number of objects.