Part 2: Sorting Birth to 9 Months
Math Learning Trajectories
Woman: Do you want that? That's a rectangle. It has four sides, see? One, two, three, four. Look. This one's a green circle. Circle. Here's a square.
Do you want a yellow square, Sam? See? I told you. First thing. Look. Here's a red triangle. Three sides. You want this one, Liv?
Olivia. You want this one? Do you have the green ones? Look. You have two green ones. One, two. You want a diff-- You want the blue one?
Here. You want the blue shape? You can't take the pegs out. Do you want the blue triangle? Blue triangle.
In this video, the boy in the black shirt holds the green rectangle offered to him by his teacher. He compares it to other shapes that she offers him, including the green circle and blue triangle. This behavior reflects Goal IT-C 10 for children birth to 9 months, who examine differences between objects through touching and shaking.
